The CME associated with the October 9, 2021, M1 flare arrived as anticipated early on October 12, UTC-day. The CME shock front arrived at the DSCOVR spacecraft (1 million miles from Earth) at 12/0147 UTC (Oct 11 / 9:47 pm EDT) as solar wind speed increased by nearly 100 km/s and total interplanetary magnetic field (IMF) strength quickly elevated to over 15 nT. Geomagnetic activity increased as expected with the CME arrival and G1-G2 (Minor-Moderate) storm conditions were met. The CME progression remains fluid at this time and a G2 Watch is still in effect for the remainder of October 12 and a G1 Warning continues until 12/2200 UTC (6:00 pm …
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