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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, April 28, 2024 21:28:25

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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

Moderate (R2) Radio Blackout Event Observed - 08 December 2023

Moderate (R2) Radio Blackout Event Observed - 08 December 2023
published: Tuesday, December 12, 2023 12:44 UTC

Region 3511 (S22W45, Esi/beta) produced an impulsive M5.5 flare at 08/2307 UTC.