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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, May 21, 2024 10:57:56

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NOAA Scales

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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
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R
no data
S
no data
G
no data
Current Space Weather Conditions
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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POSTPONED
Forecast Highlights for 20-22 May, 2024
Monday, May 20, 2024 15:17 UTC

Network upgrades are still possible WEDNESDAY, May 22, between 1400 UTC and 1900 UTC. 

Monday, May 20, 2024 03:18 UTC

R1-R2 (Minor-Moderate) events likely 20-21 May; and G1 (Minor) storm conditions probable on 20 May.

Friday, May 17, 2024 13:50 UTC

Space weather scientists at NOAA and experts across the government celebrated a new collaborative effort to improve space weather forecasts and services to mitigate impacts of space weather.

Monday, May 13, 2024 12:33 UTC

Space weather is a two-sided coin: it creates beautiful auroras, but it can also jeopardize the technologies we rely on daily.

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)