G1 (Minor) Geomagnetic Storms Likely on 16 December 2015
G1 (Minor) geomagnetic storms are possible on 16 December 2015 due to effects from a recurrent negative polarity coronal hole high speed stream. Stay tuned for updates!
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.
G1 (Minor) Geomagnetic Storms Likely on 16 December 2015