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Watch CBS News

Space


EARTH JUST EXPERIENCED A SEVERE GEOMAGNETIC STORM. HERE'S WHAT THAT MEANS – AND
WHAT YOU CAN EXPECT.

By Li Cohen

Updated on: March 25, 2024 / 10:16 AM EDT / CBS News

 * 
 * 
 * 

Northern lights seen from plane window

Northern lights seen shining from plane window 00:24

The planet was just slammed with what government officials dubbed a severe
geomagnetic storm, the second-highest level of NOAA's rating system. The event
brought "a major disturbance in Earth's magnetic field" that may have impacted
infrastructure and made the northern lights visible farther than usual,
officials said. 

NOAA's Space Weather Prediction Center issued a geomagnetic storm watch on
Saturday, saying that a coronal mass ejection was detected and expected to hit
the planet late that same day with impacts into Monday. Coronal mass ejections,
or CMEs, are when a large cloud of plasma and magnetic field bursts from the
sun's corona. 

This particular CME exploded alongside a solar flare on Friday, an event that
occurs when electromagnetic radiation suddenly erupts from the sun. NOAA says
these flares can last hours and the eruption "travels at the speed of light,"
meaning it can impact Earth as soon as it is observed. An X-class flare, like
what was observed with the CME, is the strongest type of flare, although this
particular one was not the strongest on record. NOAA forecasters did say,
however, that more X-class flares are possible through Wednesday.



"The public should not be concerned, but may wish to keep informed by visiting
our webpage for any forecast changes and updates," NOAA said on Saturday, saying
a moderate geomagnetic storm was possible. By Sunday afternoon, however, the
agency alerted of a "severe" storm that could potentially impact technology –
and eventually extend the northern lights as far south as Alabama. 

> This is a video summary of the 22 March solar flares, coronal mass ejection
> (CME), and eventual CME arrival at Earth on 24 March - with resultant
> geomagnetic storms. The CME progression continues at this time.
> pic.twitter.com/u5FeeSMzGp
> 
> — NOAA Space Weather (@NWSSWPC) March 24, 2024

"The public should not anticipate adverse impacts and no action is necessary,
but they should stay properly informed of storm progression by visiting our
webpage," NOAA said in its alert, adding that "normally mitigable" problems with
voltage control was possible, as well as "frequent and longer periods of GPS
degradation." 



"Infrastructure operators have been notified to take action to mitigate any
possible impacts," the agency said.

On Monday morning, NOAA said that the impacts of the CME "appear to be
weakening," but that solar wind speeds – which help carry the event – were still
elevated. The warning of a "moderate" storm has since been extended. Moderate
geomagnetic storms, classified as G2, can potentially impact high-latitude power
systems, damage transformers and extend the northern lights to New York and
Idaho. It can also potentially require flight ground control to issue corrective
actions for orientation. 


SPACE & ASTRONOMY

More
Soyuz crew docks at space station after 2-day rendezvous
Earth was just slammed with a "severe" geomagnetic storm
How to see the penumbral lunar eclipse, March's full moon
Russia launches one-man, two-woman crew to space station
Russia's Soyuz launch to space station aborted at last minute in rare delay
More
   In:
 * Technology
 * Aurora Borealis
 * Space
 * SolarWinds

Li Cohen

Li Cohen is a social media producer and trending content writer for CBS News.



First published on March 25, 2024 / 8:14 AM EDT

© 2024 CBS Interactive Inc. All Rights Reserved.


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RUSSIA LAUNCHES ONE-MAN, TWO-WOMAN CREW TO SPACE STATION





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