G1 (Minor) to G2 (Moderate) Geomagnetic Storm conditions likely on 12-13 September 2015
published: Friday, September 11, 2015 12:54 UTC
The continued influence of an equatorial, positive polarity coronal hole high speed stream is likely to produce periods of G1 (Minor) to G2 (Moderate) geomagnetic storms on 12 September through early on 13 September. Over the past 24 hours, this feature has produced geomagnetic storm activity up to G3 (Strong). Stay tuned for updates!