Routine Space Environment Product Issued Weekly
Issued by NWS
Issued by NWS
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326 FXXX06 KWNP 230156 WEKHIL :Product: 7-day Space Weather Highlights :Issued: 2024 Sep 23 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 16 - 22 September 2024 Solar activity was low with C-class flare activity observed over 16-21 Sep. Solar activity reached moderate levels on 22 Sep due to an M3.7/2n flare at 22/2139 UTC from Region 3835 (); the largest event of the week. Regions 3828 () and 3831 () produced most of the C-class flare activity observed throughout the week. No Earth-directed CMEs were observed. The greater than 10 MeV proton flux reached S1 (Minor) levels at 17/0735 UTC, reached a peak flux of 33.6 pfu at 17/1050 UTC, and decreased below the S1 level at 17/1615 UTC. The greater than 10 MeV proton flux remained elevated over 18-19 Sep, but remained below the S1 level. Background levels were observed over 20-22 Sep. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 16-17, and 19-22 Sep, and normal to moderate levels were observed on 18 Sep. Geomagnetic field activity reached active levels on 16 Sep due to positive polarity CH HSS influences early in the day, followed by the initial arrival of CMEs that left the Sun on 13-14 Sep late in the day. Periods of G1-G4 (Minor-Severe) storming were observed on 17 Sep due to sustained CME enhancements. Active conditions were observed again on 18 Sep, with periods of G1 (Minor) storming observed on 19 Sep, as CME influences waned and subsided. Quiet and unsettled conditions were observed on 20 Sep followed by quiet conditions over 21-22 Sep.