Severe solar storm could supercharge auroras across US, impact power grids, NOAA warns

image via Space.com

October 9, 2024, 9:32 PM

• •A severe geomagnetic storm is possible Thursday and Friday (Oct. 10 and Oct. 11).
• •The storm is likely to be in the G4 class — the second-highest level on the SWPC's geomagnetic storm scale, which takes into account both severity and potential impacts.
• •Forecasters say that if the coming geomagnetic storm strengthens and progresses into the evening, observers in central eastern states, the lower Midwest and Northern California could have a chance to see auroral displays.

A severe geomagnetic storm is possible Thursday and Friday (Oct. 10 and Oct. 11). The storm is likely to be in the G4 class — the second-highest level on the SWPC's geomagnetic storm scale, which takes into account both severity and potential impacts.  Indeed, the SWPC has issued a G4 geomagnetic storm warning — the second one they've released since 2005. The other came this past May, in advance of a storm that spawned incredibly dramatic auroral displays.

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