Previous SWPC news items.
NOAA Scales mini
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
Navigation: Low-frequency navigation signals degraded for brief intervals.
News Archive
News Archive
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CME Passage Continues; G3-G4 Still Possible Tonight, June 1st | Sunday, June 1, 2025 - 17:57 |
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G4 (Severe) conditions observed | Sunday, June 1, 2025 - 08:40 |
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CME Arrived; G3 (Strong) storm observed; G4 (Severe) storm expected | Sunday, June 1, 2025 - 08:07 |
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G4 Watch Key Messages | Saturday, May 31, 2025 - 21:41 |
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UPGRADE to G4 Watch for 1-2 June | Saturday, May 31, 2025 - 20:43 |