G1 (Minor) Geomagnetic Storm WATCH in Effect for 22-24 Nov.

A G1 (Minor) geomagnetic storm watch is now in effect for the 22-24 November (UTC Days). Earth will be under the influence of a pair of Coronal Hole High Speed Streams (CH HSS) beginning later on 22 November, 2016.

These separate features comprised one large, north-polar connected CH HSS last rotation and it was responsible for numerous G1 (Minor) and G2 (Moderate) storm periods; including an isolated G3 (Strong) interval on its previous transit across the disk. Current imagery suggests a noticeable weakening of the coronal hole structure from the last rotation. http://www.swpc.noaa.gov/

Clips, images credit: NOAA/SWPC & NASA/SDO