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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, May 21, 2024 01:57:19

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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

R3 (Strong) HF Radio Blackout Event 29 March, 2023 UTC-Day

R3 (Strong) HF Radio Blackout Event 29 March, 2023 UTC-Day
published: Friday, March 31, 2023 01:57 UTC

A R3 (Strong) HF radio blackout event occurred due to a X1.2 flare from Region 3256 on 28 March, 2023, at 10:33 pm EDT (29/0233 UTC). Visit our webpage for any additional information and updates.