


Routine Space Environment Product Issued Weekly
Issued by NWS
Issued by NWS
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271 FXXX06 KWNP 040156 WEKHIL :Product: 7-day Space Weather Highlights :Issued: 2025 Aug 04 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 28 July - 03 August 2025 Solar activity was at low levels on 28 Jul - 02 Aug and moderate (R1-Minor) levels on 03 Aug. The largest flare of the period was an M2.9/2b event observed from Region 4168 (N05, L-103, class/area Dai/060 on 03 Aug) at 03/1357 UTC. The region also produced numerous C-class events. Numerous C-class activity was observed from Regions 4153 (S30, L=217, class/area Dai/210 on 25 Jul), 4155 (S10, L=192, class/area Dai/070 on 26 Jul) and 4167 (N10, L=170, class/area Dki/430 on 03 Aug). No Earth-directed 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 28 Jul, 31 Jul and 01 Aug with a maximum flux of 1,870 pfu observed at 28/1520 UTC. Normal to moderate levels were observed on 29-30 Jul and 02-03 Aug. Geomagnetic field activity was at quiet to unsettled levels the entire highlight period. A single active period was observed late on 03 Aug. A majority of the unsettled periods was due to weak negative polarity CH HSS influence. Solar wind speeds were at mostly 400 km/s from 28 Jul through midday on 30 Jul and 475-500 km/s from midday 30 Jul through 03 Aug with a peak velocity observed at 600 km/s late on 03 Aug.