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   TID: SBBSecho 3.28-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
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   Day 1 Convective Outlook   
   NWS Storm Prediction Center Norman OK   
   1029 AM CST Wed Feb 18 2026   
      
   Valid 181630Z - 191200Z   
      
   ...NO SEVERE THUNDERSTORM AREAS FORECAST...   
      
   ...SUMMARY...   
   Organized severe weather is not expected today or tonight.   
      
   ...Synopsis...   
   Recent satellite imagery shows a very active upper pattern with   
   numerous shortwave troughs embedded within the broad troughing that   
   covers the CONUS. Lead shortwave in this series is currently   
   maturing over the Upper Midwest, with evolution into a cyclone   
   expected by this evening. A pair of lower amplitude shortwaves exist   
   farther west, one entering the central Plains and another over the   
   southern Great Basin. Lastly, a strong shortwave is currently   
   dropping quickly southward through the northeast Pacific, preceded   
   by yet another low-amplitude shortwave moving into the central CA   
   Coast.   
      
   All of these waves are displaced either north or west of the better   
   low-level moisture, which is in place from central TX to the central   
   Gulf Coast. This displacement will mitigate the overall severe   
   potential, although thunderstorms are still expected across several   
   areas, including the central Intermountain West into the central   
   Rockies ahead of the southern Great Basin shortwave, and along the   
   West Coast as the northeast Pacific shortwave drops south along the   
   coast. Highest coverage ahead of the Great Basin wave will likely   
   occur along the UT/CO this evening. Highest coverage along the West   
   Coast is anticipated along OR coast where multiple bands should move   
   through during the period. A secondary max is likely farther south   
   in the Monterey Bay Vicinity late tonight/early tomorrow morning.   
      
   Isolated elevated thunderstorms also remain possible this afternoon   
   from Lower MI into northeast OH/northwestern PA as the vorticity max   
   currently over OH moves into the region. Mid-levels will be dry but   
   lapse rates will be steep, and there could be just enough low-level   
   moisture to support limited buoyancy and a few thunderstorms as the   
   vorticity max moves through.   
      
   Lastly, strengthening low-level flow within the moistening low-level   
   airmass could support a few isolated thunderstorms across Middle TN   
   and adjacent far south-central KY tonight.   
      
   ..Mosier/Thompson.. 02/18/2026   
      
   $$   
      
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