Space Weather Prediction Center

National Oceanic and Atmospheric Administration

https://services.swpc.noaa.gov
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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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Current Space Weather Conditions
on NOAA Scales
R
no data
S
no data
G
no data
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
  • Solar Wind Speed: km/sec
  • Solar Wind Magnetic Fields: Bt nT, Bz nT
  • Noon 10.7cm Radio Flux: sfu
Strong (G3) Geomagnetic Storms Expected - 10 Oct 2026
Saturday, October 10, 2026 18:00 UTC
SWPC has issued a G3 (Strong) or greater geomagnetic storm warning valid until 10/2359 UTC. The solar wind environment became strongly enhanced following the arrival of a CME from 08 Oct at around 10/...
Moderate (G2) Geomagnetic Storming Expected - 10 Oct 2026
Saturday, October 10, 2026 16:05 UTC
A Coronal Mass Ejection (CME) arrived at Earth on 10 October. The CME signature was observed in the solar wind beginning at 10/1434 UTC. A sudden impulse of 56 nT was then recorded at the Niemegk, Ger...
Moderate (G2) Geomagnetic Storms Likely on 11 Oct 2026
Friday, October 09, 2026 19:45 UTC
SWPC has issued a G2 (Moderate) geomagnetic storm Watch for 11 Oct 2026. The Watch covers the expected arrival of two coronal mass ejections (CMEs) that left the Sun on 07 and 08 Oct. The 08 Oct CME i...
G2 (Moderate) Geomagnetic Storm Watch for 09 Oct
Tuesday, October 06, 2026 16:40 UTC
G1 (Minor) to G2 (Moderate) geomagnetic storms are likely on 09 Oct with the arrival of a CME that was associated with a M1.4 flare from Active Region 4549 on 06 Oct. A high chance for additional M-cl...

The Sun (EUV)

Solar Ultraviolet Image 195 Å (Angstrom)
Solar Ultraviolet Image 94 Å (Angstrom)
Solar Ultraviolet Image 131 Å (Angstrom)
Solar Ultraviolet Image 171 Å (Angstrom)
Solar Ultraviolet Image 284 Å (Angstrom)
Solar Ultraviolet Image 304 Å (Angstrom)
Solar Ultraviolet Image Thematic Map

The Aurora

Aurora ovation plot
South Auroral Forecast Image

The Corona

CCOR-1 Coronagraph Image
CCOR-2 Coronagraph Image
LASCO C2 Coronagraph Image
LASCO C3 Coronagraph Image

GOES X-Ray Flux

GOES Proton Flux

Planetary K Index

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