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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, September 25, 2023 21:14:14

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NOAA Scales

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Space Weather Conditions
on NOAA Scales
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
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R
no data
S
no data
G
no data
Current Space Weather Conditions
on NOAA Scales
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

Space Weather Summary

  • Solar Wind Speed: km/sec
  • Solar Wind Magnetic Fields: Bt nT, Bz nT
  • Noon 10.7cm Radio Flux: sfu

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G1 (Minor) Storm Watch Now in Effect for 26 Sep 2023
Monday, September 25, 2023 21:11 UTC

Another CME is thought to have erupted in and around AR 3435 on 22 Sep 2023.

System Maintenance Outages Sept 21 and 27
Monday, September 25, 2023 16:44 UTC

The Space Weather Prediction Center will be performing system maintenance September 21st 1930-2130 UTC (1530-1730 ET) and September 27th 1930-2130

G2 (Moderate) Geomagnetic Storm Alert on 24 Sep
Sunday, September 24, 2023 22:23 UTC

G2 (Moderate) geomagnetic storm conditions were observed at 20:52 UTC (4:52 pm eastern) as a CME from 22 Sep arrived.

G1 (Minor) Storm Watch Now in Effect for 23 & 24 Sep 2023
Thursday, September 21, 2023 20:26 UTC

An M8.0 flare from AR 3435 registered at the GOES-16 satellite at 20/1419 UTC.

Serving Essential Space Weather Communities

The Sun (EUV)

Solar Ultraviolet Image

Coronal Mass Ejections

LASCO C3 Coronagraph Image

The Aurora

Aurora ovation plot

GOES X-Ray Flux

GOES Proton Flux
Updated Time:
NOAA Scales Geomagnetic Storms
Kp < 5 Kp = 5 (G1) Kp = 6 (G2) Kp = 7 (G3) Kp = 8, 9- (G4) Kp = 9o (G5)