G1 (Minor) Watch for 17 May 2015
A G1 (minor) geomagnetic storm Watch has been issued for 17 May, due to the anticipated arrival of a CME associated with a filament eruption observed leaving the Sun on 13 May.
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) Watch for 17 May 2015