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 | ||
---|---|---|
S1 (Minor) Solar Radiation Storm Warning Extended to 09/2359 UTC | Saturday, September 9, 2017 - 02:04 | |
G1-G2 (Minor-Moderate) Geomagnetic Storm Warning in Effect | Saturday, September 9, 2017 - 01:53 | |
G3 (Strong) Geomagnetic Storm Warning Extended until 08/1500 UTC | Friday, September 8, 2017 - 06:17 | |
Update: Continued G4 (Severe) Geomagnetic Storming Observed | Thursday, September 7, 2017 - 23:40 | |
R3 (X1.3 Flare) Radio Blackout Observed on 7 Sep at 1436 UTC | Thursday, September 7, 2017 - 21:58 |