G2 (Moderate) Geomagnetic Storm Warning Issued/Conditions Observed
published: Friday, September 15, 2017 03:39 UTC UTC
A G2 (Moderate) geomagnetic storm warning was issued at 14/1555 UTC as a result of anticipated effects from a positive polarity CH HSS. G2 geomagnetic storm levels were observed at 14/1759 UTC. The G2 warning remains in effect until 15/0300 UTC.