XPost: rec.radio.amateur.dx, rec.radio.amateur.space, rec.radio.shortwave   
      
   :Product: Weekly Highlights and Forecasts   
   :Issued: 2024 Sep 23 0120 UTC   
   # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center   
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   # https://www.swpc.noaa.gov/content/subscription-services   
   #   
   #                Weekly Highlights and Forecasts   
   #   
   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.   
      
   Forecast of Solar and Geomagnetic Activity   
   23 September - 19 October 2024   
      
   Solar activity is expected to range from low to moderate levels   
   throughout the outlook period, with a varying chance for M-class   
   (R1-R2/Minor-Moderate) flares.   
      
   No proton events are expected at geosynchronous orbit, barring   
   significant flare activity.   
      
   The greater than 2 MeV electron flux at geosynchronous orbit is   
   expected to reach high levels on 23-26 Sep and 12-15 Oct, with   
   normal to moderate levels expected for the remainder of the period.   
      
   Geomagnetic field activity is likely to reach unsettled levels on   
   25-26 Sep due to positive polarity CH HSS influences. Periods of   
   active conditions are likely on 05-06 Oct due to another positive   
   polarity CH HSS. Periods of active conditions are likely again on 10   
   Oct, followed by likely periods of G1 (Minor) storming on 11-12 Oct,   
   due to yet another positive polarity CH HSS.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)