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National Oceanic and Atmospheric Administration

Saturday, March 22, 2025 12:05:36

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Space Weather Conditions
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24-Hour Observed Maximums
R
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G
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Latest Observed
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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Current Space Weather Conditions
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R1 (Minor) Radio Blackout Impacts
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HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales

The CME from 9 October, 2021, arrived early on 12 October UTC-day

G1-G2 Storm Conditions met on 12 October, 2021
The CME from 9 October, 2021, arrived early on 12 October UTC-day
published: Wednesday, October 13, 2021 20:59 UTC

The CME associated with the 9 October, 2021, M1 flare arrived as anticipated early on the 12 October UTC-day. The CME shock front arrived at the DSCOVR spacecraft (1 million miles from Earth) at 12/0147 UTC (11 Oct / 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 12 October and a G1 Warning continues until 12/2200 UTC (6:00 pm EDT). Continue to visit our SWPC webpage for the latest updates, warnings & alerts, and forecasts.