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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, July 11, 2025 13:44:38

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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 extended through 27/0900 UTC

G1 (Minor) Geomagnetic Storm Warning extended through 27/0900 UTC
published: Monday, August 27, 2018 09:14 UTC

Update:  Although magnetic field activity has declined, solar wind conditions are still favorable for G1 (Minor) geomagnetic storm levels.  The G1 (Minor) storm warning has been extended through 0900 UTC on 27 Aug.