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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R3 (Strong) HF Radio Blackout 1:50pm EST from X1.9 Flare | Monday, January 9, 2023 - 20:03 | |
R3 (Strong) Flare at 9:55 am EDT on 10 May, 2022 | Tuesday, May 10, 2022 - 15:56 | |
R2-Moderate Radio Blackout Observed 17 April 8:29 pm EDT | Monday, April 18, 2016 - 01:51 | |
R2 Radio Blackout at 1429 UTC, 3 April 2017 | Monday, April 3, 2017 - 17:50 | |
R2 Flare from Region 2222 | Thursday, December 4, 2014 - 19:40 |