MD 2239 CONCERNING HEAVY SNOW FOR PARTS OF IL…SOUTHEAST IA…AND FAR NORTHEAST MO
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
