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   HAM      Amateur Radio Interest      13,334 messages   

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   Message 13,195 of 13,334   
   Sean Dennis to All   
   3 Day Space Weather Forecast   
   28 Nov 25 00:19:01   
   
   MSGID: 1:18/200@fidonet 6694a384   
   PID: MBSE-FIDO 1.1.5 (Linux-x86_64)   
   CHRS: CP437 2   
   TZUTC: -0500   
   TID: MBSE-FIDO 1.1.5 (Linux-x86_64)   
   :Product: 3-Day Forecast   
   :Issued: 2025 Nov 28 0030 UTC   
   # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction    
   Center   
   #   
   A. NOAA Geomagnetic Activity Observation and Forecast   
      
   The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale   
   G1).   
   The greatest expected 3 hr Kp for Nov 28-Nov 30 2025 is 4.67 (NOAA Scale   
   G1).   
      
   NOAA Kp index breakdown Nov 28-Nov 30 2025   
      
                Nov 28       Nov 29       Nov 30   
   00-03UT       4.00         2.67         2.67   
   03-06UT       3.67         2.33         2.67   
   06-09UT       4.67 (G1)    2.67         2.33   
   09-12UT       3.67         2.67         2.00   
   12-15UT       3.33         2.67         2.00   
   15-18UT       3.33         2.67         1.67   
   18-21UT       3.67         2.67         2.00   
   21-00UT       3.67         2.67         2.00   
      
   Rationale: G1 (Minor) geomagnetic storming is expected early on 28 Nov   
   due to persistent CH HSS effects.   
      
   B. NOAA Solar Radiation Activity Observation and Forecast   
      
   Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was   
   below S-scale storm level thresholds.   
      
   Solar Radiation Storm Forecast for Nov 28-Nov 30 2025   
      
                 Nov 28  Nov 29  Nov 30   
   S1 or greater    1%      1%      1%   
      
   Rationale: No S1 (Minor) or greater solar radiation storms are expected.   
   No significant active region activity favorable for radiation storm   
   production is forecast.   
      
   C. NOAA Radio Blackout Activity and Forecast   
      
   No radio blackouts were observed over the past 24 hours.   
      
   Radio Blackout Forecast for Nov 28-Nov 30 2025   
      
                 Nov 28        Nov 29        Nov 30   
   R1-R2           15%           15%           15%   
   R3 or greater    1%            1%            1%   
      
   Rationale: A slight chance for R1-R2 (Minor-Moderate) radio blackouts   
   will persist through 30 Nov.   
      
      
      
   --- MBSE BBS v1.1.5 (Linux-x86_64)   
    * Origin: Outpost BBS * Johnson City, TN (1:18/200)   
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   SEEN-BY: 5075/35   
   PATH: 18/200 229/426   
      

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