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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, September 20, 2018 20:40:20

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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

G3 (Strong) Geomagnetic Storm Levels Observed

G3 (Strong) Geomagnetic Storm Levels Observed
published: Sunday, August 26, 2018 12:25 UTC

G3 (Strong) geomagnetic storm levels were observed at 0559 UTC & 0738 UTC on 26 Aug. A G3 (Strong) Warning is in effect until 26/1200 UTC due to persistent activity caused by the 20 August coronal mass ejection.