Space Weather Prediction Center

National Oceanic and Atmospheric Administration

G1 Watch for 9 July UTC-Day

G1 Watch 9 July 2017
G1 Watch for 9 July UTC-Day
published: Sunday, July 9, 2017 23:55 UTC UTC

A G1 (Minor) storm watch is in effect for the 9 July, 2017 UTC-day due to effects from an anticipated increase in solar wind speed associated with the onset of an isolated, positive polarity coronal hole high speed stream (CH HSS). Keep checking our SWPC webpage for the latest information and forecast updates.