249
ACUS11 KWNS 291642
SWOMCD
SPC MCD 291642
ILZ000-IAZ000-MOZ000-292145-

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