Today's warning includes:
– Power grid fluctuations; voltage alarms at higher latitudes
– Orientation irregularities; increased drag on low-Earth orbiters
– High-latitude HF propagation fades
– Aurora may be visible as low as New York to Wisconsin to Washington state
The SWPC wrote: “
The CME associated with the October, 9 2021, M1 flare arrived as anticipated early on the October 12 UTC-day.
“The CME shock front arrived at the DSCOVR spacecraft (one 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 EDT).”
Written by David Minister
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