2021 Geomagnetic Storms

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Christopher K.
Posts: 5641
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

2021 Geomagnetic Storms

Post by Christopher K. »

Tuesday 2 March: G1
Wednesday 3 March: G1


Tony Phillips says yesterday saw a G2, the strongest geomagnetic storm of Solar Cycle 25, possible due to March being the most geomagnetically active month of the year. Today and tomorrow, a minor storm may be possible as solar wind is escaping from a hole in the Sun's atmosphere.

The hole:
https://www.spaceweather.com/images2021/27feb21/ch.jpg

More information:
https://www.spaceweather.com/repeat_ima ... inoxes.png
Christopher K.
Posts: 5641
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: 2021 Geomagnetic Storms

Post by Christopher K. »

Saturday 6 March: G1

G1 is the weakest SWPC classification of geomagnetic storm. During a G1, the following could occur...
*weak power grid fluctuations
*possible minor impact on satellite operations
*migratory animals are affected
*aurora is visible at high latitudes

Active Regions 2806 and 2807 are still available for view. According to Tony Phillip's count, fifty-one percent of this year's days have been spotless.
Christopher K.
Posts: 5641
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: 2021 Geomagnetic Storms

Post by Christopher K. »

Saturday 13 March: G1

NOAA is saying a "co-rotating interaction region" may strike Earth's magnetic field this Saturday. CIRs are middling areas between slow- and fast-moving streams of solar wind. Solar wind plasma can build up in a CIR. When this occurs, a "fake" CME can cause bright auroras at higher Northern latitudes.
Christopher K.
Posts: 5641
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: 2021 Geomagnetic Storms

Post by Christopher K. »

Saturday 20 March: G1

NOAA says a high stream of solar wind may hit the Earth's atmosphere Saturday or Sunday. This storm alert is happening simultaneously with the appearance of Active Region 2810, which at the time is more plage than sunspot.
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