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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, June 04, 2025 15:20:17

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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

CME Arrived; G3 (Strong) storm observed; G4 (Severe) storm expected

Update about CME arrival and G3 observed with model output shown
CME Arrived; G3 (Strong) storm observed; G4 (Severe) storm expected
published: Monday, June 02, 2025 22:43 UTC

CME Arrived; G3 (Strong) storm observed; G4 (Severe) storm expected