Space Weather

We’re still waiting for a second CME to hit Earth’s magnetic field *but* it might have already arrived. On Feb. 27th, between 1000 and 1300 UT, the Faraday Cup on NOAA’s DSCOVR satellite went haywire due to a grounding fault. When it regained its senses, the solar wind speed had jumped to 800 km/s, suggesting that a CME might have arrived unnoticed during the period of chaos. If so, it means the peak of the storm occurred on Feb 27th at category G3, and we can now expect subsiding G1– to G2-class activity on Feb. 28th.

Mike Terry to WOR iog (2023-02-28)