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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, May 16, 2024 19:33:41

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NOAA Scales mini

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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

R2 (Moderate) HF Radio Blackout Observed

R2 (Moderate) HF Radio Blackout Observed
published: Thursday, May 02, 2024 13:55 UTC

Active Region 3654 produced an M9.5 flare at 30/2346 UTC. Additional R1-2 (Minor-Moderate) radio blackout events from this particular region are likely over the next 24 hours.