SPC AC 131239

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0739 AM CDT Sun Apr 13 2025

   Valid 131300Z - 141200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Thunderstorm development will be possible from the Upper Mississippi
   Valley into the Great Lakes, and from the central Rockies to the
   lower Missouri Valley.  Severe storms are not expected.

   ...Synopsis...
   A midlevel shortwave trough will move eastward from the northern
   High Plains to the Upper MS Valley by early Monday, as a remnant lee
   cyclone develops northeastward from eastern NE to Lake Superior. 
   Limited low-level moisture return is underway within the warm sector
   of the cyclone, though sufficient ascent/saturation is not occurring
   until near the IA/MN border where elevated thunderstorms may develop
   later this morning.  This elevated convection will then spread
   eastward over WI through the day and Lower MI by late evening.  

   Otherwise, isolated thunderstorms will be possible this afternoon
   into early tonight along a southward-moving cold front across CO,
   and overnight into MO where moistening and weak ascent atop the
   frontal surface (near 700 mb) could support elevated convection
   09-12z.

   ..Thompson/Dean.. 04/13/2025

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