Previous SWPC news items.
NOAA Scales mini
R1 (Minor) Radio Blackout Impacts
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 | ||
|---|---|---|
 |
Update: G3 (Strong) or greater warning issued until 1200 UTC on 20 September | Sunday, September 20, 2015 - 06:42 |
 |
G1 (Minor) Geomagnetic Storm WATCH Issued for 20-21 Sep 2015 | Saturday, September 19, 2015 - 21:55 |
|
|
G1 (Minor) Geomagnetic Storm WATCH Issued for 20-21 Sep 2015 | Saturday, September 19, 2015 - 21:55 |
 |
Solar Prominence on the Southeast Limb | Thursday, September 17, 2015 - 17:13 |
 |
G1 (Minor) to G2 (Moderate) Geomagnetic Storm conditions likely on 12-13 September 2015 | Friday, September 11, 2015 - 12:54 |