SPC AC 130545

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1245 AM CDT Sun Apr 13 2025

   Valid 131200Z - 141200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Thunderstorm development will be possible on Sunday from the upper
   Mississippi Valley into the Great Lakes, and from the Intermountain
   West to the central High Plains. No severe threat is expected.

   ...DISCUSSION...
   At mid-levels, a ridge will move through the Great Lakes and lower
   to mid Mississippi Valley, as a shortwave trough moves through the
   northern High Plains. At the surface, a low will move into the mid
   Missouri Valley as a cold front advances southeastward through the
   central Plains. Head of the front, an axis of low-level moisture
   will be in place from the Ozarks northward into Minnesota. Surface
   dewpoints are expected to be in the 40s F over the upper Mississippi
   Valley, where weak destabilization is expected. Along the northern
   part of the instability axis, isolated thunderstorm development will
   be possible during the day in parts of south-central Minnesota and
   western Wisconsin. In this area, instability will be elevated and
   mid-level lapse rates will be steep, suggesting that small hail will
   be possible with the stronger cells. Elsewhere, isolated to
   scattered thunderstorms, sub-severe in nature, are expected this
   afternoon from parts of eastern Utah eastward into the central High
   Plains.

   ..Broyles/Wendt.. 04/13/2025

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   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z