


Routine Space Environment Product Issued Weekly
Issued by NWS
Issued by NWS
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717 FXXX06 KWNP 180156 WEKHIL :Product: 7-day Space Weather Highlights :Issued: 2025 Aug 18 0120 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 11 - 17 August 2025 Solar activity reached moderate levels on 11-12 Aug due to M-class (R1-Minor) flare activity observed. Region 4173 (S18, L=110, class/area=Dro/20 on 10 Aug) produced an M1.3 flare at 11/0352 UTC, while Region 4168 (N05, L=103, class/area=Eki/350 on 08 Aug) produced M1 flares at 11/1435, 11/1536, 12/0059, and 12/0123 UTC. Low levels of solar activity were observed over 13-17 Aug. No Earth-directed CMEs resulted from the activity observed over the past week. No proton events were observed at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 11-17 Aug. Geomagnetic field activity reached active levels on 11-13 Aug, with quiet to unsettled levels observed on 14-15 Aug, due to positive polarity CH HSS influence. Quiet conditions prevailed over 16-17 Aug with the return of nominal solar wind conditions.