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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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
  • Solar Wind Speed: km/sec
  • Solar Wind Magnetic Fields: Bt nT, Bz nT
  • Noon 10.7cm Radio Flux: sfu
Geomagnetic Storm WATCHES AUG 27-28
Wednesday, August 26, 2026 00:03 UTC
A G1 (Minor) geomagnetic storm watch has been issued for 27 Aug for expected CH HSS influences and a G2 (Moderate) geomagnetic storm watch has been issued for 28 Aug for the anticipated arrival of CME...
Geomagnetic Storm Watches AUG 27-29
Wednesday, August 26, 2026 17:00 UTC
Geomagnetic activity in response to CMEs that departed the Sun on 25 Aug is now anticipated to extend into 29 Aug. A G1 (Minor) geomagnetic storm watch remains for 27 Aug for expected CH HSS influence...
SWPCs New Solar Wind Display Officially Operational
Friday, August 21, 2026 16:25 UTC
What Changed?Now that the new solar wind display has completed its experimental review period, the experimental banner has been removed from the title and it has become the operational display for sol...
SOLAR-1 CCOR-2 Now Fully Operational and on Our Webpage
Thursday, July 23, 2026 17:47 UTC
Coronagraph imagery is now available from NOAA’s Space Weather Observations at L1 to Advance Readiness (SOLAR-1). The Compact Coronagraph 2 (CCOR-2) instrument was declared operational in June 2026, a...

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 < 5Kp = 5 (G1)Kp = 6 (G2)Kp = 7 (G3)Kp = 8, 9- (G4)Kp = 9o (G5)