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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, April 20, 2024 04:11:28

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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

S1 (Minor) Solar Radiation Storm Warning Extended to 09/2359 UTC

S1 (Minor) Solar Radiation Storm Warning Extended to 09/2359 UTC
published: Saturday, September 09, 2017 15:10 UTC

The S1 (Minor) solar radiation storm warning has been extended to 23:59 UTC (19:59 Eastern) on 09 September.