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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Update: Continued G4 (Severe) Geomagnetic Storming Observed | Thursday, September 7, 2017 - 23:40 |
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Update: G3 (Strong) or greater warning issued until 1200 UTC on 20 September | Sunday, September 20, 2015 - 06:42 |
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Update: G1 (Minor) Geomagnetic Storm Watch for 23-24 February | Monday, February 20, 2017 - 21:01 |
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Update: G1 (Minor) Geomagnetic Storm Alert Issued | Monday, June 18, 2018 - 02:38 |
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Update - Geomagnetic Storm has re-strengthened from a G3 to G4 | Monday, April 24, 2023 - 05:31 |