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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, September 25, 2017 09:38:18

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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

S1 (Minor) Solar Radiation Storm Conditions Observed - 14 July 2017

S1 (Minor) Solar Radiation Storm Conditions Observed - 14 July 2017
published: Sunday, July 16, 2017 19:14 UTC

The greater than 10 MeV proton flux at geostationary orbit exceeded the S1 (Minor) solar radiation storm threshold at 14/0900 UTC. A peak flux of 22 pfu was observed at 14/2320 UTC. Flux levels decreased below S1 (Minor) levels at 15/1115 UTC.