NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, October 24, 2021 18:23:00

Main menu

NOAA Scales mini

minimize icon
Space Weather Conditions
24-Hour Observed Maximums
R
no data
S
no data
G
no data
Latest Observed
R
no data
S
no data
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
maximize icon
R
no data
S
no data
G
no data
Current Space Weather Conditions
R1 (Minor) Radio Blackout Impacts
close
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.