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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, April 21, 2025 17:59:08

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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

SERVICE INTERRUPTIONS are possible from April 18 through April 20, 2022.

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SERVICE INTERRUPTIONS are possible from April 18 through April 20, 2022.
published: Tuesday, April 26, 2022 02:36 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 impacts, some disruption of data, products, and services is expected. Our webpage may exhibit increased latency and gaps as the work proceeds. Services should return to normal later than Wednesday, April 20, 2022.