MSGID: 1:18/200@fidonet 6691a9b1   
   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 18 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 6 (NOAA Scale   
   G2).   
   The greatest expected 3 hr Kp for May 18-May 20 2025 is 5.00 (NOAA Scale   
   G1).   
      
   NOAA Kp index breakdown May 18-May 20 2025   
      
                May 18       May 19       May 20   
   00-03UT       3.67         4.67 (G1)    3.67   
   03-06UT       3.67         5.00 (G1)    2.67   
   06-09UT       4.00         4.67 (G1)    3.00   
   09-12UT       4.67 (G1)    4.33         2.67   
   12-15UT       3.67         3.67         3.00   
   15-18UT       4.33         4.00         3.33   
   18-21UT       4.67 (G1)    4.00         3.33   
   21-00UT       4.67 (G1)    3.67         3.00   
      
   Rationale: G1 (Minor) geomagnetic storms are expected on 18-19 May due   
   to influence form a positive polarity CH HSS.   
      
   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 18-May 20 2025   
      
                 May 18  May 19  May 20   
   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 18-May 20 2025   
      
                 May 18        May 19        May 20   
   R1-R2           35%           35%           35%   
   R3 or greater   10%           10%           10%   
      
   Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio   
   blackouts, with a slight chance for R3 (Strong), over 18-20 May.   
      
      
      
   --- MBSE BBS v1.1.1 (Linux-x86_64)   
    * Origin: Outpost BBS * Johnson City, TN (1:18/200)   
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