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   HAM      Amateur Radio Interest      13,334 messages   

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   Message 12,856 of 13,334   
   Sean Dennis to All   
   3 Day Space Weather Forecast   
   09 May 25 00:19:02   
   
   MSGID: 1:18/200@fidonet 66916019   
   PID: MBSE-FIDO 1.1.1 (Linux-x86_64)   
   CHRS: CP437 2   
   TZUTC: -0400   
   TID: MBSE-FIDO 1.1.1 (Linux-x86_64)   
   :Product: 3-Day Forecast   
   :Issued: 2025 May 09 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 4 (below NOAA   
   Scale levels).   
   The greatest expected 3 hr Kp for May 09-May 11 2025 is 4.67 (NOAA Scale   
   G1).   
      
   NOAA Kp index breakdown May 09-May 11 2025   
      
                May 09       May 10       May 11   
   00-03UT       3.33         3.67         3.00   
   03-06UT       3.67         3.00         3.67   
   06-09UT       3.67         2.67         2.67   
   09-12UT       3.67         2.00         2.00   
   12-15UT       3.67         2.67         2.00   
   15-18UT       4.00         2.00         2.67   
   18-21UT       4.67 (G1)    2.67         2.67   
   21-00UT       4.00         2.67         2.67   
      
   Rationale: G1 (Minor) conditions are likely on 09 May due to the onset   
   of another negative polarity CH HSS coupled with a possible glancing   
   blow CME from 05 May.   
      
   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 May 09-May 11 2025   
      
                 May 09  May 10  May 11   
   S1 or greater    5%      5%      5%   
      
   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 May 09-May 11 2025   
      
                 May 09        May 10        May 11   
   R1-R2           40%           40%           40%   
   R3 or greater    5%            5%            5%   
      
   Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts   
   over 09-11 May.   
      
      
      
   --- MBSE BBS v1.1.1 (Linux-x86_64)   
    * Origin: Outpost BBS * Johnson City, TN (1:18/200)   
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