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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, June 01, 2025 08:36:03

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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

News Archive

Previous SWPC news items.

News Archive

Originally Posted
Update about CME arrival and G3 observed with model output shown CME Arrived; G3 (Strong) storm observed; G4 (Severe) storm expected Sunday, June 1, 2025 - 08:07
G4 Watch Key Messages G4 Watch Key Messages Saturday, May 31, 2025 - 21:41
UPGRADE to G4 Watch for 1-2 June UPGRADE to G4 Watch for 1-2 June Saturday, May 31, 2025 - 20:43
G4 Watch for 2 June, 2025 G4 (Severe) Geomagnetic Storm Watch in Effect for 2 June UTC-Day Saturday, May 31, 2025 - 14:53
G3 G3 Level Geomagnetic Event Observed Thursday, May 29, 2025 - 03:09

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