www.usgs.gov
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2600:9000:21f3:8800:1b:8180:81c0:93a1
Public Scan
Submitted URL: http://vulcan.wr.usgs.gov//glossary//platetectonics//description_plate_tectonics.html
Effective URL: https://www.usgs.gov/observatories/cvo
Submission: On July 23 via api from US — Scanned from DE
Effective URL: https://www.usgs.gov/observatories/cvo
Submission: On July 23 via api from US — Scanned from DE
Form analysis
16 forms found in the DOMGET /search
<form class="views-exposed-form usa-form" data-drupal-target-view="search-page_results" data-drupal-selector="views-exposed-form-search-page-results" action="/search" method="get" id="views-exposed-form-search-page-results" accept-charset="UTF-8"
novalidate="">
<div class="form-item js-form-item form-type-textfield js-form-type-textfield form-item-keywords js-form-item-keywords form-no-label">
<input placeholder="Search" data-drupal-selector="edit-keywords" type="text" id="edit-keywords" name="keywords" value="" size="30" maxlength="128" class="form-text usa-input" aria-label="Input">
</div>
<div data-drupal-selector="edit-actions" class="form-actions js-form-wrapper form-wrapper" id="edit-actions"><label class="usa-sr-only">Label</label><input class="fas fa-search button js-form-submit form-submit usa-button" aria-label="Search"
data-drupal-selector="edit-submit-search" type="submit" id="edit-submit-search" value=""></div>
</form>
GET /search
<form class="views-exposed-form usa-form" data-drupal-target-view="search-page_results" data-drupal-selector="views-exposed-form-search-page-results" action="/search" method="get" id="views-exposed-form-search-page-results" accept-charset="UTF-8"
novalidate="">
<div class="form-item js-form-item form-type-textfield js-form-type-textfield form-item-keywords js-form-item-keywords form-no-label">
<input placeholder="Search" data-drupal-selector="edit-keywords" type="text" id="edit-keywords" name="keywords" value="" size="30" maxlength="128" class="form-text usa-input" aria-label="Input">
</div>
<div data-drupal-selector="edit-actions" class="form-actions js-form-wrapper form-wrapper" id="edit-actions"><label class="usa-sr-only">Label</label><input class="fas fa-search button js-form-submit form-submit usa-button" aria-label="Search"
data-drupal-selector="edit-submit-search" type="submit" id="edit-submit-search" value=""></div>
</form>
<form class="usa-form" id="volcano-filters-desktop">
<fieldset class="usa-fieldset" id="vscmmVolcanoStatusControls">
<div class="usa-checkbox">
<input class="usa-checkbox__input btn-instrument vscmm-btn-category vscmm-btn-filters range" type="checkbox" name="" id="volCat4" onclick="volHazardsUI.toggleHazardCategory('NORMAL')" data-category-id="4" checked=""> <label
class="usa-checkbox__label" for="volCat4"> <span class="alert-normal"></span> <span class="name"> NORMAL</span> <span class="badge volStatusBadge" style="float:right; display: inline-block;">13</span> </label>
</div>
<div class="usa-checkbox">
<input class="usa-checkbox__input btn-instrument vscmm-btn-category vscmm-btn-filters range" type="checkbox" name="" id="volCat5" onclick="volHazardsUI.toggleHazardCategory('UNASSIGNED')" data-category-id="5" checked=""> <label
class="usa-checkbox__label" for="volCat5"> <span class="alert-unassigned"></span> <span class="name"> UNASSIGNED</span> <span class="badge volStatusBadge" style="float:right; display: inline-block;">15</span> </label>
</div>
</fieldset>
</form>
<form class="usa-form" id="age-fields-filters">
<fieldset class="usa-fieldset">
<div class="usa-radio" id="age2hr" style="display: none;">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-default" id="2hr" type="radio" name="quakeAge" data-age="2hr" value="2hr" onclick="monQuakeUI.setAge('2hr', this)">
<label class="usa-radio__label" for="2hr"><span class="circle-red"></span><span class="name">Last 2 Hours</span><span class="badge age-badge" id="2hrBadge">0</span></label>
</div>
<div class="usa-radio" id="age2day" style="display: none;">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-primary" id="2day" type="radio" name="quakeAge" data-age="2day" onclick="monQuakeUI.setAge('2day', this)" value="2day" checked="">
<label class="usa-radio__label" for="2day"><span class="circle-orange"></span><span class="name">Last 2 Days</span><span class="badge age-badge" id="2dayBadge">0</span> </label>
</div>
<div class="usa-radio" id="age2week">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-default" id="2week" type="radio" name="quakeAge" value="2week" data-age="2week" onclick="monQuakeUI.setAge('2week', this)">
<label class="usa-radio__label" for="2week"><span class="circle-yellow"></span><span class="name">Last 2 Weeks</span><span class="badge age-badge" id="2weekBadge">10</span></label>
</div>
<div class="usa-radio" id="age4week">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-default" id="4week" type="radio" name="quakeAge" value="4week" data-age="4week" onclick="monQuakeUI.setAge('4week', this)">
<label class="usa-radio__label" for="4week"><span class="circle-white"></span><span class="name">Last 4 Weeks</span><span class="badge age-badge" id="4weekBadge">35</span></label>
</div>
<div class="usa-radio monitoring-custom-date-radio" id="ageDate">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters vscmm-btn-date-custom range btn-default" id="age-custom" type="radio" name="quakeAge" value="agecustom" data-age="custom" onclick="monQuakeUI.customDate(this)">
<label class="usa-radio__label" for="age-custom"><span class="name date-range">Custom Date Range</span></label>
<div id="monitoring-custom-date__wrapper" class="monitoring-custom-date monitoring-custom-date__wrapper">
<label class="monitoring-custom-date__header" for="datepicker-start">Custom Start Date</label>
<div class="monitoring-custom-date__subtext">mm/dd/yyyy</div>
<div class="monitoring-custom-date__picker-start">
<input type="text" id="datepicker-start" class="picker-start" name="picker-start" readonly="readonly">
</div>
<label class="monitoring-custom-date__header" for="datepicker-end">Custom End Date</label>
<div class="monitoring-custom-date__subtext">mm/dd/yyyy</div>
<div class="monitoring-custom-date__picker-end">
<input type="text" id="datepicker-end" class="picker-end" name="picker-end" readonly="readonly">
</div>
</div>
</div>
</fieldset>
</form>
<form class="usa-form" id="mag_fields">
<fieldset class="usa-fieldset">
<div class="usa-checkbox" id="checkMag0" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag0" type="checkbox" name="mag0" data-mag="0" onchange="monQuakeUI.toggleMag(0)" value="" checked="">
<label class="usa-checkbox__label" for="mag0"><span class="name">< 1 M</span><span class="badge mag-badge" id="mag0Badge"></span> </label>
</div>
<div class="usa-checkbox" id="checkMag1" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag1" type="checkbox" name="mag1" data-mag="1" onchange="monQuakeUI.toggleMag(1)" value="" checked="">
<label class="usa-checkbox__label" for="mag1"><span class="name">1 - 2 M</span><span class="badge mag-badge" id="mag1Badge"></span> </label>
</div>
<div class="usa-checkbox" id="checkMag2" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag2" type="checkbox" name="mag2" data-mag="2" onchange="monQuakeUI.toggleMag(2)" value="" checked="">
<label class="usa-checkbox__label" for="mag2"><span class="name">2 - 3 M</span><span class="badge mag-badge" id="mag2Badge"></span> </label>
</div>
<div class="usa-checkbox" id="checkMag3" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag3" type="checkbox" name="mag3" data-mag="3" onchange="monQuakeUI.toggleMag(3)" value="" checked="">
<label class="usa-checkbox__label" for="mag3"><span class="name">3 - 4M</span><span class="badge mag-badge" id="mag3Badge">5</span> </label>
</div>
<div class="usa-checkbox" id="checkMag4" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag4" type="checkbox" name="mag4" data-mag="4" onchange="monQuakeUI.toggleMag(4)" value="" checked="">
<label class="usa-checkbox__label" for="mag4"><span class="name">4 - 5M</span><span class="badge mag-badge" id="mag4Badge">25</span> </label>
</div>
<div class="usa-checkbox" id="checkMag5" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag5" type="checkbox" name="mag5" data-mag="5" onchange="monQuakeUI.toggleMag(5)" value="" checked="">
<label class="usa-checkbox__label" for="mag5"><span class="name">5 - 6 M</span><span class="badge mag-badge" id="mag5Badge">4</span></label>
</div>
<div class="usa-checkbox" id="checkMag6" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag6" type="checkbox" name="mag6" data-mag="6" onchange="monQuakeUI.toggleMag(6)" value="" checked="">
<label class="usa-checkbox__label" for="mag6"><span class="name">6+ M</span><span class="badge mag-badge" id="mag6Badge">1</span> </label>
</div>
</fieldset>
</form>
<form class="usa-form" id="depth_fields">
<fieldset class="usa-fieldset">
<div class="usa-checkbox" id="checkDepth0-5" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth0-5" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('0-5')" value="" data-depth="0-5" checked="" style="display: none;">
<label class="usa-checkbox__label" for="depth0-5"><span class="name">< 5km</span><span class="badge depth-badge" id="depth0-5Badge"></span> </label>
</div>
<div class="usa-checkbox" id="checkDepth5-10" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth5-10" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('5-10')" value="" data-depth="5-10" checked="" style="display: none;">
<label class="usa-checkbox__label" for="depth5-10"><span class="name">5 - 10km</span><span class="badge depth-badge" id="depth5-10Badge">1</span></label>
</div>
<div class="usa-checkbox" id="checkDepth10-15" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth10-15" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('10-15')" value="" data-depth="10-15" checked="" style="display: none;">
<label class="usa-checkbox__label" for="depth10-15"><span class="name">10 - 15km</span><span class="badge depth-badge" id="depth10-15Badge">33</span> </label>
</div>
<div class="usa-checkbox" id="checkDepth15-20" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth15-20" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('15-20')" value="" data-depth="15-20" checked="" style="display: none;">
<label class="usa-checkbox__label" for="depth15-20"><span class="name">15 - 20km</span><span class="badge depth-badge" id="depth15-20Badge"></span> </label>
</div>
<div class="usa-checkbox" id="checkDepth20" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range" id="depth20+" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('20+')" value="" data-depth="20" checked="">
<label class="usa-checkbox__label" for="depth20+"><span class="name">20+km</span><span class="badge depth-badge" id="depth20Badge">1</span> </label>
</div>
</fieldset>
</form>
<form class="usa-form" id="instrument-filters-desktop">
<fieldset class="usa-fieldset" id="vscmmCategoryControls"></fieldset>
</form>
<form class="usa-form" id="currentLavaData">
<fieldset class="usa-fieldset current-lava-data">
<div class="usa-checkbox current-lava-checkbox" id="checkEruptiveVentPoints">
<input class="usa-checkbox__input btn-current-lava" id="lavaEruptiveVentPoints" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('EruptiveVentPoints')" value="" data-depth="EruptiveVentPoints" checked="">
<label class="usa-checkbox__label" for="lavaEruptiveVentPoints"><span class="name">Eruptive Vent Points</span></label>
<span class="lava-legend-EruptiveVentPoints current-lava-legend"></span>
<span class="lava-last-updated" id="lavaEruptiveVentPointsLastDate"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkEruptiveFissureLines">
<input class="usa-checkbox__input btn-current-lava" id="lavaEruptiveFissureLines" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('EruptiveFissureLines')" value="" data-depth="EruptiveFissureLines" checked="">
<label class="usa-checkbox__label" for="lavaEruptiveFissureLines"><span class="name">Eruptive Fissure Lines</span></label>
<span class="lava-legend-EruptiveFissureLines current-lava-legend"></span>
<span class="lava-last-updated" id="lavaEruptiveFissureLinesLastDate"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkFlowChannelLines">
<input class="usa-checkbox__input btn-current-lava" id="lavaFlowChannelLines" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('FlowChannelLines')" value="" data-depth="FlowChannelLines" checked="">
<label class="usa-checkbox__label" for="lavaFlowChannelLines"><span class="name">Flow Channel Lines</span></label>
<span class="lava-legend-FlowChannelLines current-lava-legend"></span>
<span class="lava-last-updated" id="lavaFlowChannelLinesLastDate"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkFlowFrontPoints">
<input class="usa-checkbox__input btn-current-lava" id="lavaFlowFrontPoints" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('FlowFrontPoints')" value="" data-depth="FlowFrontPoints" checked="">
<label class="usa-checkbox__label" for="lavaFlowFrontPoints"><span class="name">Flow Front Points</span></label>
<span class="lava-legend-FlowFrontPoints current-lava-legend"></span>
<span class="lava-last-updated" id="lavaFlowFrontPointsLastDate"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkFlowPolys">
<input class="usa-checkbox__input btn-current-lava" id="lavaFlowPolys" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('FlowPolys')" value="" data-depth="FlowPolys" checked="">
<label class="usa-checkbox__label" for="lavaFlowPolys"><span class="name">Flow Polygons</span></label>
<span class="lava-legend-FlowPolys current-lava-legend"></span>
<span class="lava-last-updated" id="lavaFlowPolysLastDate"></span>
</div>
</fieldset>
</form>
<form class="usa-form" id="lavaData">
<fieldset class="usa-fieldset lava-data">
<div class="usa-checkbox lava-checkbox" id="checkYearsAD1983to2018">
<input class="usa-checkbox__input btn-lava" id="lavaAD1983to2018" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1983to2018')" value="" data-depth="AD1983to2018" checked="">
<label class="usa-checkbox__label" for="lavaAD1983to2018"><span class="lava-legend-AD1983to2018 lava-symbol"></span><span class="name">A.D. 1983 - 2018</span><span class="badge lava-badge" id="lava1983-2018Badge"></span> </label>
</div>
<div class="usa-checkbox lava-checkbox" id="checkYearsAD1951to1982">
<input class="usa-checkbox__input btn-lava" id="lavaAD1951to1982" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1951to1982')" value="" data-depth="AD1951to1982" checked="">
<label class="usa-checkbox__label" for="lavaAD1951to1982"><span class="lava-legend-AD1951to1982 lava-symbol"></span><span class="name">A.D. 1951 - 1982</span><span class="badge lava-badge" id="lava1951-1982Badge"></span> </label>
</div>
<div class="usa-checkbox lava-checkbox" id="checkYearsAD1925to1950">
<input class="usa-checkbox__input btn-lava" id="lavaAD1925to1950" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1925to1950')" value="" data-depth="AD1925to1950" checked="">
<label class="usa-checkbox__label" for="lavaAD1925to1950"><span class="lava-legend-AD1925to1950 lava-symbol"></span><span class="name">A.D. 1925 - 1950</span><span class="badge lava-badge" id="lava1925-1950Badge"></span> </label>
</div>
<div class="usa-checkbox lava-checkbox" id="checkYearsAD1869to1924">
<input class="usa-checkbox__input btn-lava" id="lavaAD1869to1924" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1869to1924')" value="" data-depth="AD1869to1924" checked="">
<label class="usa-checkbox__label" for="lavaAD1869to1924"><span class="lava-legend-AD1869to1924 lava-symbol"></span><span class="name">A.D. 1869 - 1924</span><span class="badge lava-badge" id="lava1869-1924Badge"></span> </label>
</div>
<div class="usa-checkbox lava-checkbox" id="checkYearsAD1840to1868">
<input class="usa-checkbox__input btn-lava" id="lavaAD1840to1868" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1840to1868')" value="" data-depth="AD1840to1868" checked="">
<label class="usa-checkbox__label" for="lavaAD1840to1868"><span class="lava-legend-AD1840to1868 lava-symbol"></span><span class="name">A.D. 1840 - 1868</span><span class="badge lava-badge" id="lava1840-1868Badge"></span></label>
</div>
<div class="usa-checkbox lava-checkbox" id="checkYearsAD1778to1839">
<input class="usa-checkbox__input btn-lava" id="lavaAD1778to1839" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1778to1839')" value="" data-depth="AD1778to1839" checked="">
<label class="usa-checkbox__label" for="lavaAD1778to1839"><span class="lava-legend-AD1778to1839 lava-symbol"></span><span class="name">A.D. 1778 - 1839</span><span class="badge lava-badge" id="lava1778-1839Badge"></span> </label>
</div>
</fieldset>
</form>
<form class="usa-form" id="volcano-filters-mobile">
<fieldset class="usa-fieldset font-12pt" id="vscmmVolcanoStatusControlsMobile">
</fieldset>
</form>
<form class="usa-form" id="age-filters-mobile">
<fieldset class="usa-fieldset fieldset-min-width font-12pt">
<div class="usa-radio" id="age2hrMobile" style="display: none;">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-default" id="2hrMobile" type="radio" name="quakeAgeMobile" data-age="2hr" value="2hr" onclick="monQuakeUI.setAge('2hr', this)">
<label class="usa-radio__label" for="2hrMobile"><span class="circle-red"></span><span class="name">Last 2 Hours</span><span class="badge age-badge" id="2hrMobileBadge">0</span></label>
</div>
<div class="usa-radio" id="age2dayMobile" style="display: none;">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-primary" id="2dayMobile" type="radio" name="quakeAgeMobile" data-age="2day" onclick="monQuakeUI.setAge('2day', this)" value="2day" checked="">
<label class="usa-radio__label" for="2dayMobile"><span class="circle-orange"></span><span class="name">Last 2 Days</span><span class="badge age-badge" id="2dayMobileBadge">0</span></label>
</div>
<div class="usa-radio" id="age2weekMobile">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-default" id="2weekMobile" type="radio" name="quakeAgeMobile" value="2week" data-age="2week" onclick="monQuakeUI.setAge('2week', this)">
<label class="usa-radio__label" for="2weekMobile"><span class="circle-yellow"></span><span class="name">Last 2 Weeks</span><span class="badge age-badge" id="2weekMobileBadge">10</span></label>
</div>
<div class="usa-radio" id="age4weekMobile">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters range btn-default" id="4weekMobile" type="radio" name="quakeAgeMobile" value="4week" data-age="4week" onclick="monQuakeUI.setAge('4week', this)">
<label class="usa-radio__label" for="4weekMobile"><span class="circle-white"></span><span class="name">Last 4 Weeks</span><span class="badge age-badge" id="4weekMobileBadge">35</span></label>
</div>
<div class="usa-radio monitoring-custom-date-radio" id="ageDateMobile">
<input class="usa-radio__input btn-age vscmm-btn-quake vscmm-btn-filters vscmm-btn-date-custom range btn-default" id="age-custom-mobile" type="radio" name="quakeAgeMobile" value="agecustom" data-age="custom"
onclick="monQuakeUI.customDate(this)">
<label class="usa-radio__label" for="age-custom-mobile"><span class="name date-range">Custom Date Range</span></label>
<div id="monitoring-custom-date__wrapper-mobile" class="monitoring-custom-date monitoring-custom-date__wrapper">
<label class="monitoring-custom-date__header" for="datepicker-start-mobile">Custom Start Date</label>
<div class="monitoring-custom-date__subtext">mm/dd/yyyy</div>
<div class="monitoring-custom-date__picker-start">
<input type="text" id="datepicker-start-mobile" class="picker-start" name="picker-start" readonly="readonly">
</div>
<label class="monitoring-custom-date__header" for="datepicker-end-mobile">Custom End Date</label>
<div class="monitoring-custom-date__subtext">mm/dd/yyyy</div>
<div class="monitoring-custom-date__picker-end">
<input type="text" id="datepicker-end-mobile" class="picker-end" name="picker-end" readonly="readonly">
</div>
</div>
</div>
</fieldset>
</form>
<form class="usa-form" id="mag-filters-mobile">
<fieldset class="usa-fieldset font-12pt">
<div class="usa-checkbox" id="checkMag0Mobile" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag0Mobile" type="checkbox" name="mag0Mobile" data-mag="0" onchange="monQuakeUI.toggleMag(0)" value="" checked="">
<label class="usa-checkbox__label" for="mag0Mobile"><span class="name">< 1 M</span><span class="badge mag-badge" id="mag0MobileBadge"></span></label>
</div>
<div class="usa-checkbox" id="checkMag1Mobile" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag1Mobile" type="checkbox" name="mag1Mobile" data-mag="1" onchange="monQuakeUI.toggleMag(1)" value="" checked="">
<label class="usa-checkbox__label" for="mag1Mobile"><span class="name">1 - 2 M</span><span class="badge mag-badge" id="mag1MobileBadge"></span></label>
</div>
<div class="usa-checkbox" id="checkMag2Mobile" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag2Mobile" type="checkbox" name="mag2Mobile" data-mag="2" onchange="monQuakeUI.toggleMag(2)" value="" checked="">
<label class="usa-checkbox__label" for="mag2Mobile"><span class="name">2 - 3 M</span><span class="badge mag-badge" id="mag2MobileBadge"></span></label>
</div>
<div class="usa-checkbox" id="checkMag3Mobile" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag3Mobile" type="checkbox" name="mag3Mobile" data-mag="3" onchange="monQuakeUI.toggleMag(3)" value="" checked="">
<label class="usa-checkbox__label" for="mag3Mobile"><span class="name">3 - 4M</span><span class="badge mag-badge" id="mag3MobileBadge">5</span></label>
</div>
<div class="usa-checkbox" id="checkMag4Mobile" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag4Mobile" type="checkbox" name="mag4Mobile" data-mag="4" onchange="monQuakeUI.toggleMag(4)" value="" checked="">
<label class="usa-checkbox__label" for="mag4Mobile"><span class="name">4 - 5M</span><span class="badge mag-badge" id="mag4MobileBadge">25</span></label>
</div>
<div class="usa-checkbox" id="checkMag5Mobile" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag5Mobile" type="checkbox" name="mag5Mobile" data-mag="5" onchange="monQuakeUI.toggleMag(5)" value="" checked="">
<label class="usa-checkbox__label" for="mag5Mobile"><span class="name">5 - 6 M</span><span class="badge mag-badge" id="mag5MobileBadge">4</span></label>
</div>
<div class="usa-checkbox" id="checkMag6Mobile" style="display: none;">
<input class="usa-checkbox__input btn-mag vscmm-btn-quake vscmm-btn-filters range btn-primary" id="mag6Mobile" type="checkbox" name="magMobile" data-mag="6" onchange="monQuakeUI.toggleMag(6)" value="" checked="">
<label class="usa-checkbox__label" for="mag6Mobile"><span class="name">6+ M</span><span class="badge mag-badge" id="mag6MobileBadge">1</span></label>
</div>
</fieldset>
</form>
<form class="usa-form" id="depth-filters-mobile">
<fieldset class="usa-fieldset font-12pt">
<div class="usa-checkbox" id="checkDepth0-5Mobile" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth0-5Mobile" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('0-5')" value="" data-depth="0-5" checked="" style="display: none;">
<label class="usa-checkbox__label" for="depth0-5Mobile"><span class="name">< 5km</span><span class="badge depth-badge" id="depth0-5MobileBadge"></span></label>
</div>
<div class="usa-checkbox" id="checkDepth5-10Mobile" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth5-10Mobile" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('5-10')" value="" data-depth="5-10" checked=""
style="display: none;">
<label class="usa-checkbox__label" for="depth5-10Mobile"><span class="name">5 - 10km</span><span class="badge depth-badge" id="depth5-10MobileBadge">1</span></label>
</div>
<div class="usa-checkbox" id="checkDepth10-15Mobile" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth10-15Mobile" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('10-15')" value="" data-depth="10-15" checked=""
style="display: none;">
<label class="usa-checkbox__label" for="depth10-15Mobile"><span class="name">10 - 15km</span><span class="badge depth-badge" id="depth10-15MobileBadge">33</span></label>
</div>
<div class="usa-checkbox" id="checkDepth15-20Mobile" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range btn-primary" id="depth15-20Mobile" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('15-20')" value="" data-depth="15-20" checked=""
style="display: none;">
<label class="usa-checkbox__label" for="depth15-20Mobile"><span class="name">15 - 20km</span><span class="badge depth-badge" id="depth15-20MobileBadge"></span></label>
</div>
<div class="usa-checkbox" id="checkDepth20Mobile" style="display: none;">
<input class="usa-checkbox__input btn-depth vscmm-btn-quake vscmm-btn-filters range" id="depth20Mobile+" type="checkbox" name="" onchange="monQuakeUI.toggleDepth('20+')" value="" data-depth="20" checked="">
<label class="usa-checkbox__label" for="depth20Mobile+"><span class="name">20+km</span><span class="badge depth-badge" id="depth20MobileBadge">1</span></label>
</div>
</fieldset>
</form>
<form class="usa-form" id="instruments-filters-mobile">
<fieldset class="usa-fieldset font-12pt" id="vscmmCategoryControlsMobile"></fieldset>
</form>
<form class="usa-form" id="current-lava-filters-mobile">
<fieldset class="usa-fieldset current-lava-data">
<div class="usa-checkbox current-lava-checkbox" id="checkEruptiveVentPointsMobile">
<input class="usa-checkbox__input btn-current-lava" id="lavaEruptiveVentPointsMobile" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('EruptiveVentPoints')" value="" data-depth="EruptiveVentPoints" checked="">
<label class="usa-checkbox__label" for="lavaEruptiveVentPointsMobile"><span class="name">Eruptive Vent Points</span></label>
<span class="lava-legend-EruptiveVentPoints current-lava-legend"></span>
<span class="lava-last-updated" id="lavaEruptiveVentPointsLastDateMobile"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkEruptiveFissureLinesMobile">
<input class="usa-checkbox__input btn-current-lava" id="lavaEruptiveFissureLinesMobile" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('EruptiveFissureLines')" value="" data-depth="EruptiveFissureLines" checked="">
<label class="usa-checkbox__label" for="lavaEruptiveFissureLinesMobile"><span class="name">Eruptive Fissure Lines</span></label>
<span class="lava-legend-EruptiveFissureLines current-lava-legend"></span>
<span class="lava-last-updated" id="lavaEruptiveFissureLinesLastDateMobile"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkFlowChannelLines">
<input class="usa-checkbox__input btn-current-lava" id="lavaFlowChannelLinesMobile" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('FlowChannelLines')" value="" data-depth="FlowChannelLines" checked="">
<label class="usa-checkbox__label" for="lavaFlowChannelLinesMobile"><span class="name">Flow Channel Lines</span></label>
<span class="lava-legend-FlowChannelLines current-lava-legend"></span>
<span class="lava-last-updated" id="lavaFlowChannelLinesLastDateMobile"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkFlowFrontPoints">
<input class="usa-checkbox__input btn-current-lava" id="lavaFlowFrontPointsMobile" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('FlowFrontPoints')" value="" data-depth="FlowFrontPoints" checked="">
<label class="usa-checkbox__label" for="lavaFlowFrontPointsMobile"><span class="name">Flow Front Points</span></label>
<span class="lava-legend-FlowFrontPoints current-lava-legend"></span>
<span class="lava-last-updated" id="lavaFlowFrontPointsLastDateMobile"></span>
</div>
<div class="usa-checkbox current-lava-checkbox" id="checkFlowPolys">
<input class="usa-checkbox__input btn-current-lava" id="lavaFlowPolysMobile" type="checkbox" name="" onchange="volHazardsUI.toggleCurrentLavaLayer('FlowPolys')" value="" data-depth="FlowPolys" checked="">
<label class="usa-checkbox__label" for="lavaFlowPolysMobile"><span class="name">Flow Polygons</span></label>
<span class="lava-legend-FlowPolys current-lava-legend"></span>
<span class="lava-last-updated" id="lavaFlowPolysLastDateMobile"></span>
</div>
</fieldset>
</form>
<form class="usa-form" id="lava-filters-mobile">
<fieldset class="usa-fieldset lava-data">
<div class="usa-checkbox" id="checkYearsAD1983to2018Mobile">
<input class="usa-checkbox__input btn-lava" id="lavaAD1983to2018Mobile" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1983to2018')" value="" data-depth="AD1983to2018" checked="">
<label class="usa-checkbox__label" for="lavaAD1983to2018Mobile"><span class="lava-legend-AD1983to2018 lava-symbol"></span><span class="name">A.D. 1983 - 2018</span><span class="badge lava-badge" id="lava1983-2018BadgeMobile"></span> </label>
</div>
<div class="usa-checkbox" id="checkYearsAD1951to1982Mobile">
<input class="usa-checkbox__input btn-lava" id="lavaAD1951to1982Mobile" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1951to1982')" value="" data-depth="AD1951to1982" checked="">
<label class="usa-checkbox__label" for="lavaAD1951to1982Mobile"><span class="lava-legend-AD1951to1982 lava-symbol"></span><span class="name">A.D. 1951 - 1982</span><span class="badge lava-badge" id="lava1951-1982BadgeMobile"></span> </label>
</div>
<div class="usa-checkbox" id="checkYearsAD1925to1950Mobile">
<input class="usa-checkbox__input btn-lava" id="lavaAD1925to1950Mobile" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1925to1950')" value="" data-depth="AD1925to1950" checked="">
<label class="usa-checkbox__label" for="lavaAD1925to1950Mobile"><span class="lava-legend-AD1925to1950 lava-symbol"></span><span class="name">A.D. 1925 - 1950</span><span class="badge lava-badge" id="lava1925-1950BadgeMobile"></span> </label>
</div>
<div class="usa-checkbox" id="checkYearsAD1869to1924Mobile">
<input class="usa-checkbox__input btn-lava" id="lavaAD1869to1924Mobile" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1869to1924')" value="" data-depth="AD1869to1924" checked="">
<label class="usa-checkbox__label" for="lavaAD1869to1924Mobile"><span class="lava-legend-AD1869to1924 lava-symbol"></span><span class="name">A.D. 1869 - 1924</span><span class="badge lava-badge" id="lava1869-1924BadgeMobile"></span> </label>
</div>
<div class="usa-checkbox" id="checkYearsAD1840to1868Mobile">
<input class="usa-checkbox__input btn-lava" id="lavaAD1840to1868Mobile" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1840to1868')" value="" data-depth="AD1840to1868" checked="">
<label class="usa-checkbox__label" for="lavaAD1840to1868Mobile"><span class="lava-legend-AD1840to1868 lava-symbol"></span><span class="name">A.D. 1840 - 1868</span><span class="badge lava-badge" id="lava1840-1868BadgeMobile"></span></label>
</div>
<div class="usa-checkbox" id="checkYearsAD1778to1839Mobile">
<input class="usa-checkbox__input btn-lava" id="lavaAD1778to1839Mobile" type="checkbox" name="" onchange="volHazardsUI.toggleLavaLayer('AD1778to1839')" value="" data-depth="AD1778to1839" checked="">
<label class="usa-checkbox__label" for="lavaAD1778to1839Mobile"><span class="lava-legend-AD1778to1839 lava-symbol"></span><span class="name">A.D. 1778 - 1839</span><span class="badge lava-badge" id="lava1778-1839BadgeMobile"></span> </label>
</div>
</fieldset>
</form>
Text Content
Skip to main content An official website of the United States government Here's how you know Here's how you know Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. U.S. Geological Survey * Science * Science Explorer * Biology * Climate * Coasts * Energy * Environmental Health * Geology * Information Systems * Maps and Mapping * Minerals * Methods and Analysis * Natural Hazards * Ocean * Planetary Science * Science Technology * Water * Mission Areas * Core Science Systems * Ecosystems * Energy and Minerals * Natural Hazards * Water Resources * Programs * Regions * Northeast Region * Southeast Region * Midcontinent Region * Rocky Mountain Region * Southwest Region * Alaska Region * Northwest-Pacific Islands Region * Science Centers * Observatories * Laboratories * Frequently Asked Questions * Educational Resources * Special Topics * USGS Celebrates the Year of Open Science * Products * Data * Data Management * Data Releases * Real-time Data * All Data * Maps * Geologic Maps * Map Releases * Topographic (Topo) Maps * Volcanic Maps * All Maps * Multimedia Gallery * Audio * Before and After Images * Images * Slideshows * Stereograms * Videos * Webcams * All Multimedia * Publications * Web Tools * Alert and Notification Services * APIs * Data Access Tools * Data Analysis Tools * Data Visualizations * Interactive Maps * All Web Tools * Software * U.S. Board on Geographic Names * The National Map * USGS Library * USGS Store * Park Passes * News * News Releases * National News Releases * State News Releases * All News Releases * Featured Stories * Science Snippets * Technical Announcements * Employees in the News * Get Our News * Media Contacts * Newsletters * I'm a Reporter * Earthquake Questions * Request Footage * Multimedia Gallery * Connect * Headquarters * 12201 Sunrise Valley Drive Reston, VA 20192 * Locations * Staff Profiles * Social Media * Careers * Contact Us * 1-888-392-8545 * Email * USGS Store 1-888-275-8747 * About * About Us * Who We Are * Our History * Past Directors * Survey Manual * Key Officials * Organizational Chart * Organization * Mission Areas * Programs * Regions * Science Centers * Observatories * Laboratories * Science Support Offices * Congressional * Statements * Contacts * Budget * Careers and Employees * Diversity and Equal Opportunity * Doing Business * Acquisition and Financial Assistance * Partners and Cooperators * Building Partnerships * Emergency Management * Facebook * Twitter * Linkedin * Digg * Reddit * Pinterest * Email Latest Earthquakes | Chat Share Social Media Label Menu Label Close U.S. Geological Survey * Science * Science Explorer * Mission Areas * Programs * Regions * Science Centers * Observatories * Laboratories * Frequently Asked Questions * Educational Resources * Special Topics * USGS Celebrates the Year of Open Science * Products * Data * Maps * Multimedia Gallery * Publications * Web Tools * Software * U.S. Board on Geographic Names * The National Map * USGS Library * USGS Store * Park Passes * News * News Releases * Featured Stories * Science Snippets * Technical Announcements * Employees in the News * Get Our News * Media Contacts * Newsletters * I'm a Reporter * Connect * Headquarters * Locations * Staff Profiles * Social Media * Careers * Contact Us * About * About Us * Survey Manual * Key Officials * Organization * Congressional * Budget * Careers and Employees * Diversity and Equal Opportunity * Doing Business * Emergency Management * Latest Earthquakes * Live WebChat * Share Social Media * Facebook * Twitter * Linkedin * Digg * Reddit * Pinterest * Email BREADCRUMB 1. Volcano Hazards Program 2. Observatories CASCADES VOLCANO OBSERVATORY FIND U.S. VOLCANO Select a U.S. Volcano Adagdak Akutan Amak Amukta Aniakchak Atka Volcanic Complex Augustine Behm Canal-Rudyerd Bay Black Peak Bobrof Bogoslof Buldir Buzzard Creek Carlisle Chagulak Chiginagak Cleveland Dana Davidof Denison Douglas Duncan Canal Dutton Edgecumbe Emmons Lake volcanic center Fisher Fourpeaked Frosty Gareloi Great Sitkin Griggs Hayes Herbert Iliamna Imuruk Lake Ingakslugwat Hills Isanotski Kagamil Kaguyak Kanaga Kasatochi Katmai Kialagvik Kiska Koniuji Kukak Kupreanof Little Sitkin Mageik Makushin Martin Moffett Mount Churchill Mount Recheshnoi Novarupta Okmok Pavlof Pavlof Sister Redoubt Roundtop Saint Paul Island Seguam Segula Semisopochnoi Shishaldin Snowy Mountain Spurr St. Michael Steller Stepovak Bay group Takawangha Tana Tanaga Tlevak Strait-Suemez Island Trident Ugashik-Peulik Ukinrek Maars Uliaga Unnamed (near Ukinrek Maars) Veniaminof Vsevidof Westdahl Wide Bay Wrangell Yantarni Yunaska Ofu-Olosega Ta'u Island Tutuila Island San Francisco Volcanic Field Uinkaret Volcanic Field Clear Lake Volcanic Field Coso Volcanic Field Lassen Volcanic Center Long Valley Caldera Mammoth Mountain Medicine Lake Mono Lake Volcanic Field Mono-Inyo Craters Mount Shasta Salton Buttes Ubehebe Craters Dotsero Volcanic Center Agrigan Ahyi Seamount Alamagan Anatahan Asuncion Daikoku Seamount East Diamante Esmeralda Bank Farallon de Pajaros Fukujin Seamount Guguan Kasuga 2 Maug Islands Pagan Ruby Sarigan South Sarigan Seamount Supply Reef Zealandia Bank Haleakalā Hualālai Kama‘ehuakanaloa Kīlauea Mauna Kea Mauna Loa Black Butte Crater Lava Field Craters of the Moon Volcanic Field Hell's Half Acre Lava Field Wapi Lava Field Soda Lakes Carrizozo Lava Flow Red Hill-Quemado Volcanic Field Valles Caldera Zuni-Bandera Volcanic Field Belknap Blue Lake Crater Cinnamon Butte Crater Lake Davis Lake Volcanic Field Devils Garden Lava Field Diamond Craters Volcanic Field Jordan Craters Volcanic Field Mount Bachelor Mount Hood Mount Jefferson Newberry Sand Mountain Volcanic Field Three Sisters Black Rock Desert Volcanic Field Markagunt Plateau Volcanic Field Glacier Peak Indian Heaven Volcanic Field Mount Adams Mount Baker Mount Rainier Mount St. Helens West Crater Volcanic Field Yellowstone MONITORING MAP Belknap CraterBlack Butte Crater lava fieldBlue Lake CraterCinnamon ButteCrater LakeCraters of the Moon volcanic fieldDavis Lake volcanic fieldDevils Garden lava fieldDiamond Craters volcanic fieldGlacier PeakHells Half Acre lava fieldIndian Heaven Volcanic FieldJordan Craters volcanic fieldMedicine Lake volcanoMount AdamsMount BachelorMount BakerMount HoodMount JeffersonMount RainierMount ShastaMount St. HelensNewberrySand Mountain volcanic fieldThree SistersWapi Lava FieldWest Crater volcanic fieldYellowstone Zoom to +Zoom In −Zoom Out RESULTS RESULTS * VOLCANOES TOTAL VOLCANOES : 28 * BELKNAP CRATER UNASSIGNED - UNASSIGNED N/A * BLACK BUTTE CRATER LAVA FIELD UNASSIGNED - UNASSIGNED N/A * BLUE LAKE CRATER UNASSIGNED - UNASSIGNED N/A * CINNAMON BUTTE UNASSIGNED - UNASSIGNED N/A * CRATER LAKE GREEN - NORMAL N/A * CRATERS OF THE MOON VOLCANIC FIELD UNASSIGNED - UNASSIGNED N/A * DAVIS LAKE VOLCANIC FIELD UNASSIGNED - UNASSIGNED N/A * DEVILS GARDEN LAVA FIELD UNASSIGNED - UNASSIGNED N/A * DIAMOND CRATERS VOLCANIC FIELD UNASSIGNED - UNASSIGNED N/A * GLACIER PEAK GREEN - NORMAL N/A * HELLS HALF ACRE LAVA FIELD UNASSIGNED - UNASSIGNED N/A * INDIAN HEAVEN VOLCANIC FIELD UNASSIGNED - UNASSIGNED N/A * JORDAN CRATERS VOLCANIC FIELD UNASSIGNED - UNASSIGNED N/A * MEDICINE LAKE VOLCANO GREEN - NORMAL N/A * MOUNT ADAMS GREEN - NORMAL N/A * MOUNT BACHELOR UNASSIGNED - UNASSIGNED N/A * MOUNT BAKER GREEN - NORMAL N/A * MOUNT HOOD GREEN - NORMAL 2021-06-06 04:38:06 * MOUNT JEFFERSON GREEN - NORMAL N/A * MOUNT RAINIER GREEN - NORMAL N/A * MOUNT SHASTA GREEN - NORMAL N/A * MOUNT ST. HELENS GREEN - NORMAL 2023-10-30 22:53:25 * NEWBERRY GREEN - NORMAL 2022-04-04 18:31:38 * SAND MOUNTAIN VOLCANIC FIELD UNASSIGNED - UNASSIGNED N/A * THREE SISTERS GREEN - NORMAL 2022-01-31 20:45:17 * WAPI LAVA FIELD UNASSIGNED - UNASSIGNED N/A * WEST CRATER VOLCANIC FIELD UNASSIGNED - UNASSIGNED N/A * YELLOWSTONE GREEN - NORMAL 2024-07-01 18:32:53 * EARTHQUAKES EARTHQUAKES DATA * OFF * ON * TOTAL EARTHQUAKES: 0 * INSTRUMENTS TOTAL INSTRUMENTS : 0 FILTERS Filter Total Items: REGION FILTER * VOLCANOES VOLCANOES NORMAL 13 UNASSIGNED 15 * EARTHQUAKES EARTHQUAKES DATA * OFF * ON EARTHQUAKE AGE LAST 2 HOURS0 LAST 2 DAYS0 LAST 2 WEEKS10 LAST 4 WEEKS35 CUSTOM DATE RANGE CUSTOM START DATE MM/DD/YYYY CUSTOM END DATE MM/DD/YYYY EARTHQUAKE MAGNITUDE < 1 M 1 - 2 M 2 - 3 M 3 - 4M5 4 - 5M25 5 - 6 M4 6+ M1 EARTHQUAKE DEPTH (KM) < 5KM 5 - 10KM1 10 - 15KM33 15 - 20KM 20+KM1 * INSTRUMENTS INSTRUMENTS * RECENT LAVA FLOWS RECENT LAVA FLOW DATA * OFF * ON ERUPTIVE VENT POINTS ERUPTIVE FISSURE LINES FLOW CHANNEL LINES FLOW FRONT POINTS FLOW POLYGONS * PAST LAVA FLOWS LAVA FLOW DATA * OFF * ON A.D. 1983 - 2018 A.D. 1951 - 1982 A.D. 1925 - 1950 A.D. 1869 - 1924 A.D. 1840 - 1868 A.D. 1778 - 1839 * REGIONS REGION SELECT SELECT REGION ID-WY ALASKA HAWAII MARIANA ISLANDS CA-NV WA-OR UT-CO-AZ-NM ALL LEARN MORE THE MAP DISPLAYS VOLCANOES, EARTHQUAKES, MONITORING INSTRUMENTS, AND PAST LAVA FLOWS. GET HELP EARTHQUAKE PLOTS To generate a cross-sectional plot, enter desired cross section width, then define the cross-sectional area by clicking the map twice to define the two endpoints. Then click the view plot button. Wait until map has completely loaded/refreshed before clicking. And click slowly. Select Plot Area Cross Section Width: Plot Input Km Plot Zoom In Plot Zoom Out View Plot Hide Plot Area FILTER INSTRUMENTS Show All Hide All SETTINGS MAPLAYER SELECT MAP LAYERS SELECT BASE MAP STREETS OCEANS OPENSTREETMAP WORLD IMAGERY WORLD IMAGERY WITH LABELS NATIONAL GEOGRAPHIC TERRAIN WITH LABELS TOPOGRAPHIC GRAY DARK GRAY Earthquake Colors * Time * Depth Earthquake Depth Units * Km * Miles Earthquake Time Units * UTC * Local Legend Display Settings * Off * On Earthquakes Data * Off * On Reset All Settings * Reset * RESULTS RESULTS FILTERS FILTERS PLOTS PLOTS SETTINGS SETTINGS * FILTERS * VOLCANOES Volcanoes * EARTHQUAKES Earthquake Data * Off * On Earthquake Age Last 2 Hours0 Last 2 Days0 Last 2 Weeks10 Last 4 Weeks35 Custom Date Range Custom Start Date mm/dd/yyyy Custom End Date mm/dd/yyyy Earthquake Magnitude < 1 M 1 - 2 M 2 - 3 M 3 - 4M5 4 - 5M25 5 - 6 M4 6+ M1 Earthquake Depth (km) < 5km 5 - 10km1 10 - 15km33 15 - 20km 20+km1 * INSTRUMENTS Instruments * RECENT LAVA FLOWS Recent Lava Flow Data * Off * On Eruptive Vent Points Eruptive Fissure Lines Flow Channel Lines Flow Front Points Flow Polygons * PAST LAVA FLOWS Lava Flow Data * Off * On A.D. 1983 - 2018 A.D. 1951 - 1982 A.D. 1925 - 1950 A.D. 1869 - 1924 A.D. 1840 - 1868 A.D. 1778 - 1839 * REGIONS Select Region ID-WY Alaska Hawaii Mariana Islands CA-NV WA-OR UT-CO-AZ-NM All LEARN MORE The map displays volcanoes, earthquakes, monitoring instruments, and past lava flows. Get Help * EARTHQUAKE PLOTS EARTHQUAKE PLOTS To generate a cross-sectional plot, enter desired cross section width, then define the cross-sectional area by clicking the map twice to define the two endpoints. Then click the view plot button. Wait until map has completely loaded/refreshed before clicking. And click slowly. Select Plot Area Cross Section Width: Plot Input Mobile Km Plot Zoom In Plot Zoom Out View Plot Hide Plot Area * SETTINGS MAPLAYER SELECT MAP LAYERS SELECT BASE MAP STREETS OCEANS OPENSTREETMAP WORLD IMAGERY WORLD IMAGERY WITH LABELS NATIONAL GEOGRAPHIC TERRAIN WITH LABELS TOPOGRAPHIC GRAY DARK GRAY Earthquake Colors * Time * Depth Earthquake Depth Units * Km * Miles Earthquake Time Units * UTC * Local Legend Display Settings * Off * On Earthquake Data * Off * On Reset All Settings * Reset ZOOM IN ZOOM OUT LEGEND Map Legend × Times Magnitudes Volcanoes UNASSIGNED/UNASSIGNED NORMAL/GREEN * RESULTS * VOLCANOES Total Volcanoes : 0 * EARTHQUAKES Earthquakes Data * Off * On * Total Earthquakes : 0 * INSTRUMENTS Total Instruments : 0 × EARTHQUAKE PLOTS * Time/Depth Future plot: Strain Release Over Time × SETTINGS COLOR EARTHQUAKES depth time Display earthquake colors according to their depth or age. DEPTH UNITS km mi Display earthquake depths in kilometers or miles. TIME UNITS UTC local Display earthquake times in UTC or my local time. SHOW LEGEND On Off Display legend over map. -------------------------------------------------------------------------------- Reset Clear all choices and return to default settings. Close × HELP CLICK BUTTONS AT RIGHT TO PERFORM THESE ACTIONS. Show or hide earthquakes on map. Changes color depending on selection. View map. Hidden when map is visible. View list of earthquakes. Hidden when earthquake list is visible. Show or hide monitoring instruments on map. Changes color depending on selection. Display this help menu. Click to display legend. Display settings options. Provides options to: * Color earthquakes by time or depth. * View depth units in km or mi. * View times as UTC or my local time. * Turn legend on or off. * Reset options to default values. Close × EMPTY MODAL Loading Data Processing earthquake data... Map Legend × Times Magnitudes Volcanoes UNASSIGNED/UNASSIGNED NORMAL/GREEN FULL SCREEN FULL SCREEN ZOOM IN ZOOM IN FULL SCREEN FULL SCREEN LEGEND LEGEND Cascades Volcano Observatory * Home * Volcano Updates * Science * Prepare * Multimedia * News * Connect * About The U.S. Geological Survey's Cascades Volcano Observatory strives to serve the national interest by helping people to live knowledgeably and safely with volcanoes in Washington, Oregon, and Idaho. YOUNG VOLCANOES IN WA, OR & ID Very High Threat Potential 1 Crater Lake Glacier Peak Mount Baker Mount Hood Mount Rainier Mount St. Helens Newberry Three Sisters High Threat Potential 1 Mount Adams Moderate Threat Potential 1 Mount Bachelor Low to Very Low Threat Potential 1 Belknap Black Butte Crater Lava Field Blue Lake Crater Cinnamon Butte Craters of the Moon Volcanic Field Davis Lake Volcanic Field Devils Garden Lava Field Diamond Craters Volcanic Field Hell's Half Acre Lava Field Indian Heaven Volcanic Field Jordan Craters Volcanic Field Mount Jefferson Sand Mountain Volcanic Field Wapi Lava Field West Crater Volcanic Field 1. View the threat rankings of US Volcanoes. CASCADES VOLCANO MONITORING USGS Cascades Volcano scientists listen to and watch volcanoes using a variety of equipment. Seismometers detect earthquakes, GPS receivers detect ground motion, "sniffers" detect volcanic gas, and staff innovate new equipment to solve unique activity detection needs. Learn More CASCADES VOLCANO HAZARDS Volcanic activity in the Cascade Range can produce many types of volcano hazards. Tall and snow-covered mountains can be hazardous even without a change in volcanic activity. Learn About Hazards CVO QUICK LINKS * Subscribe to volcano updates * Teaching resources * Actions to take when a volcano erupts * Photos, videos, and webcams NEWS CVO dismantles Mount St. Helens’ VALT seismic station after 18 years in service. July 16, 2024 CVO DISMANTLES MOUNT ST. HELENS’ VALT SEISMIC STATION AFTER 18 YEARS IN SERVICE. Volcano Watch — Cruising Chain of Craters Road: Recent earthquakes and past volcanism July 3, 2024 VOLCANO WATCH — CRUISING CHAIN OF CRATERS ROAD: RECENT EARTHQUAKES AND PAST VOLCANISM Mount St. Helens seismicity elevated but within the range of background levels (February to June 2024) June 18, 2024 MOUNT ST. HELENS SEISMICITY ELEVATED BUT WITHIN THE RANGE OF BACKGROUND LEVELS (FEBRUARY TO JUNE 2024) View All PUBLICATIONS November 29, 2023 DYNAMICS OF MAGMA MIXING AND MAGMA MOBILIZATION BENEATH MAUNA LOA – INSIGHTS FROM THE 1950 AD SOUTHWEST RIFT ZONE ERUPTION. Eruptions from Mauna Loa’s Southwest Rift Zone (SWRZ) pose a significant threat to nearby communities due to high eruption rates and steep slopes resulting in little time for evacuation. Despite the large body of research done on Mauna Loa, knowledge of the timing and duration of magma residence and transfer through its internal plumbing system is still poorly constrained. This study presents a fi Authors Maren Kahl, Daniel J. Morgan, Carl Thornber, Richard Walshaw, Kendra J. Lynn, Frank A. Trusdell By Volcano Hazards Program, Volcano Science Center, Cascades Volcano Observatory August 25, 2022 CAN LAVA FLOW LIKE WATER? ASSESSING APPLICATIONS OF CRITICAL FLOW THEORY TO CHANNELIZED BASALTIC LAVA FLOWS Flowing lava and water have dramatically different physical properties but can form similar hydraulic structures, including undular hydraulic jumps, or standing wave trains. In water flows, undular hydraulic jumps are evidence of critical flow (Froude number ∼1) and open-channel hydraulic theory provides a powerful tool for estimating flow depth and velocity. Monitoring these parameters in an acti Authors Hannah R. Dietterich, Gordon E. Grant, Becky Fasth, J. J. Major, Katharine V. Cashman By Volcano Hazards Program, Volcano Science Center, Cascades Volcano Observatory May 15, 2020 MOUNT ST. HELENS AT 40 No abstract available. Authors Jon J. Major By Volcano Hazards Program, Volcano Science Center, Cascades Volcano Observatory View All SCIENCE link December 7, 2023 COLUMBIA RIVER BASALT GROUP STRETCHES FROM OREGON TO IDAHO The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt province on Earth, covering over 210,000 km2 of mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada. By Cascades Volcano Observatory link December 7, 2023 COLUMBIA RIVER BASALT GROUP STRETCHES FROM OREGON TO IDAHO The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt province on Earth, covering over 210,000 km2 of mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada. Learn More link December 7, 2023 THE BORING VOLCANIC FIELD — HILLS OF THE PORTLAND BASIN Non-enthusiasts may consider the Boring Volcanic Field aptly named, but the title comes from its location, not from a lack of interesting characteristics. By Cascades Volcano Observatory link December 7, 2023 THE BORING VOLCANIC FIELD — HILLS OF THE PORTLAND BASIN Non-enthusiasts may consider the Boring Volcanic Field aptly named, but the title comes from its location, not from a lack of interesting characteristics. Learn More link December 7, 2023 MONITORING CASCADE VOLCANOES Active volcanoes are complex natural systems, and understanding a volcano's behaviors requires the attention of specialists from many science disciplines. It demands a combination of current knowledge about magma systems, tectonic plate motion, volcano deformation, earthquakes, gases, chemistry, volcano histories, processes, and hazards. By Cascades Volcano Observatory link December 7, 2023 MONITORING CASCADE VOLCANOES Active volcanoes are complex natural systems, and understanding a volcano's behaviors requires the attention of specialists from many science disciplines. It demands a combination of current knowledge about magma systems, tectonic plate motion, volcano deformation, earthquakes, gases, chemistry, volcano histories, processes, and hazards. Learn More View All YOUNG VOLCANOES IN WA, OR & ID Very High Threat Potential 1 Crater Lake Glacier Peak Mount Baker Mount Hood Mount Rainier Mount St. Helens Newberry Three Sisters High Threat Potential 1 Mount Adams Moderate Threat Potential 1 Mount Bachelor Low to Very Low Threat Potential 1 Belknap Black Butte Crater Lava Field Blue Lake Crater Cinnamon Butte Craters of the Moon Volcanic Field Davis Lake Volcanic Field Devils Garden Lava Field Diamond Craters Volcanic Field Hell's Half Acre Lava Field Indian Heaven Volcanic Field Jordan Craters Volcanic Field Mount Jefferson Sand Mountain Volcanic Field Wapi Lava Field West Crater Volcanic Field 1. View the threat rankings of US Volcanoes. 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