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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Geomagnetic Storm Watches for 27 & 28 September | Sunday, September 24, 2017 - 23:01 |
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Geomagnetic Storm Watches for 27-29 September | Wednesday, September 25, 2019 - 19:04 |
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Geomagnetic Storm Watches in Effect 29-31 July (up to G3; Strong) | Monday, July 29, 2024 - 13:43 |
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Geomagnetic Storm Watches Issued for 24-25 March 2024 | Saturday, March 23, 2024 - 19:23 |
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Geomagnetic Storm Watches Now Continue Into 1 August | Monday, July 29, 2024 - 22:02 |