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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, April 29, 2025 23:30:01

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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

G3 (Strong) Geomagnetic Storm Warning Extended until 08/1500 UTC

G3 (Strong) Geomagnetic Storm Warning Extended until 08/1500 UTC
published: Saturday, September 09, 2017 01:55 UTC

The G3 (Strong) geomagnetic storm warning has been extended through 1500 UTC (11:00 Eastern) on 08 September due to continued CME effects.