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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, April 21, 2022 04:20:38

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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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R2 Event on 21 April, 2022 - M9 flare
R3 Event on 20 April 2022
SOHO/LASCO C2 Imagery of the Associated Coronal Mass Ejection
Flagger in Road Ahead sign
M9 Flare (R2 - Moderate Radio Blackout) on 21 April, 2022
Thursday, April 21, 2022 04:17 UTC

Region 2993 produced an M9.6 flare (R2-Moderate Radio Blackout) at 9:59 pm EDT (21/0159 UTC).

X2 Flare (R3 - Strong Radio Blackout) on 20 April, 2022 UTC-Day
Wednesday, April 20, 2022 05:22 UTC

An X2.2 flare (R3-Strong Radio Blackout) occurred at 11:57pm EDT on 19 April, 2022 (20/0357 UTC).

R3 (Strong) Radio Blackouts from Region 2994
Sunday, April 17, 2022 05:50 UTC

An X1 flare was observed at 17/0334 UTC from newly numbered Region 2994 (N14E75).

SERVICE INTERRUPTIONS are possible from April 18 through April 20, 2022.
Thursday, April 14, 2022 19:29 UTC

Power system maintenance at the Space Weather Prediction Center is scheduled for April 18-20, 2022, While every effort will be made to minimize the

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

Estimated Planetary K-Index

Planetary K Index plot