G1 (Minor) Geomagnetic Storm Watch Upgraded to a G2 (Moderate) Watch
UPDATE: G1 (Minor) geomagnetic storm watch upgraded to a G2 (Moderate) geomagnetic storm watch for 17 October 2016 (UTC day) due to coronal hole high speed stream activity.
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 Storm Watch Upgraded to a G2 (Moderate) Watch