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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, May 21, 2024 05:53:00

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NOAA Scales mini

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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

R2 (Moderate) Radio Blackout Observed

R2 (Moderate) Radio Blackout Observed
published: Saturday, March 04, 2023 15:31 UTC

Region 3234 produced an M8.6 flare, which peaked at 28/1750 UTC. Flares of this magnitude correlate with R2 (Moderate) radio blackouts. The sunlit side of the Earth, including the CONUS, may have experienced temporary or limited blackouts of High Frequency (HF) radio signals. Conditions are expected to improve over the next few hours.