Storm Prediction Center Mesoscale Discussion 2239

   Mesoscale Discussion 2239
   NWS Storm Prediction Center Norman OK
   1042 AM CST Sat Nov 29 2025

   Areas affected...parts of IL...southeast IA...and far northeast MO

   Concerning...Heavy snow 

   Valid 291642Z - 292145Z

   SUMMARY...Primary bands of moderate to sporadic heavy snow should
   pivot from south-central across southeast Iowa, and persist across
   much of central into northern Illinois through this afternoon. Rates
   around 1 inch per hour should occasionally occur.

   DISCUSSION...Long-duration snowfall event will persist through the
   afternoon, shifting eastward to the northeast of a surface cyclone
   near the western Kansas City Metro Area. Ongoing heavy snow band
   across south-central IA should largely pivot across southeast IA and
   perhaps expand as the strongest mid-level DCVA shifts across eastern
   IA this afternoon. Farther east, the persistent low-level warm
   conveyor will maintain a broad swath of moderate snow across central
   to northern IL. While the bulk of the ascent should remain beneath
   the dendritic growth zone centered around 550 mb, strengthening
   mid-level DCVA should foster sporadic bursts of heavier snow.
   Snowfall rates within these regimes should occasionally reach 1
   in/hr.

   ..Grams.. 11/29/2025

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...LOT...ILX...LSX...DVN...DMX...EAX...

   LAT...LON   40109261 40519334 41149351 41689305 41839219 41769124
               41148796 40248759 39418782 39118851 40109261