


Routine Space Environment Product Issued Weekly
Issued by NWS
Issued by NWS
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798 FXXX06 KWNP 150156 WEKHIL :Product: 7-day Space Weather Highlights :Issued: 2025 Sep 15 0137 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # https://www.swpc.noaa.gov/content/subscription-services # # 7-day Space Weather Highlights # Highlights of Solar and Geomagnetic Activity 08 - 14 September 2025 Solar activity was at low levels with only C-Class flares observed. The largest flare of the period was a C7.6 from Region 4207 (N28, L=48, class/area=Cso/80 on 11 Sep) at 11/1521 UTC. No significant CME activity was observed. No proton events were observed at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 09, 13, and 14 Sep due to influences from multiple coronal hole high speed streams (CH HSS). Normal to moderate levels were observed on 08, 10, 11, and 12 Sep. Geomagnetic field activity reached G2 (Moderate) storm levels on 09 Sep due to sustained period of southward Bz. G1 (Minor) storm levels were observed on 14 Sep due to influences from a negative polarity CH HSS. Quiet to active levels were observed on the remaining days of the highlight period.