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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, June 23, 2025 07:43:22

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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

G1 (Minor) Geomagnetic Storm Warning Valid 21/2355-22/0900 UTC

Auroral Prediction
G1 (Minor) Geomagnetic Storm Warning Valid 21/2355-22/0900 UTC
published: Saturday, September 22, 2018 10:09 UTC

A G1 (Minor) geomagnetic storm warning is valid from 21/2355-22/0900 UTC. A G1 (Minor) storm Alert was issued for conditions observed at 21/2359 UTC.