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
Originally Posted | ||
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G4 (Severe) Geomagnetic Storm Alert on 24 March UTC-Day | Friday, March 24, 2023 - 04:41 | |
G4 Alert: Another storm reaches severe levels | Monday, June 22, 2015 - 19:41 | |
G4 Conditions Observed! | Friday, May 10, 2024 - 18:30 | |
G4 or Greater WATCH Remains in Effect | Sunday, May 12, 2024 - 13:01 | |
G4 Watch In Effect for May 11 | Thursday, May 9, 2024 - 17:43 |