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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, April 08, 2025 04:15:47 UTC

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NOAA Scales

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Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
R
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S
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G
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Latest Observed
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S
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R
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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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New Solar Cycle Plots Available!
NOAA Safeguards Satellites!
New Solar Cycle Plots Available!
Monday, March 31, 2025 20:30 UTC

These new solar cycle plots will provide more accurate predictions for solar cycle 25 (SC25).

*NEW UPDATE*: Coronagraph Images and Data from GOES-19 Availability Expanded
Wednesday, March 19, 2025 20:16 UTC

Since February 25, 2025, the Space Weather Prediction Center has presented new coronagraph images and data from the GOES-19 Compact Coronagraph-1 (CCOR-1). 

Safeguarding Satellites: How NOAA Monitors Space Weather to Prevent Disruptions
Friday, February 21, 2025 16:43 UTC

Read the full story here

New Preliminary Coronagraph Images from GOES-19
Thursday, February 06, 2025 22:38 UTC

Beginning February 6, 2025, the Space Weather Prediction Center is presenting new coronagraph images from the GOES-19 Compact Coronagraph-1 (CCOR-1). 

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

Created with Highcharts 8.0.4SWPC Warning ThresholdABCMXChart context menuLoadingData...Zoom6 Hour1 Day3 Day7 Day

GOES Proton Flux

Created with Highcharts 8.0.4SWPC 10 MeV Warning ThresholdChart context menuLoading Data...Zoom6 Hour1 Day3 Day7 Day
Updated Time:
NOAA Scales Geomagnetic Storms
Kp < 5 Kp = 5 (G1) Kp = 6 (G2) Kp = 7 (G3) Kp = 8, 9- (G4) Kp = 9o (G5)