572
ACUS11 KWNS 281841
SWOMCD
SPC MCD 281840
WIZ000-MIZ000-MNZ000-290045-
MESOSCALE DISCUSSION 2280
NWS STORM PREDICTION CENTER NORMAN OK
1240 PM CST SUN DEC 28 2025
AREAS AFFECTED...SOUTHEAST MINNESOTA INTO NORTHWEST/NORTHERN
WISCONSIN
CONCERNING...HEAVY SNOW
VALID 281840Z - 290045Z
SUMMARY...CONDITIONS WILL INITIALLY BE MARGINAL FOR HEAVIER SNOWFALL
RATES, BUT COOLING TEMPERATURES AT THE SURFACE AND ALOFT WILL
INCREASE POTENTIAL FOR SNOWFALL RATES TO AROUND 1 INCH PER HOUR.
DISCUSSION...AS THE MID-LEVEL JET INTENSIFIES IN THE CENTRAL PLAINS,
A SURFACE LOW CONTINUES TO DEEPEN IN NORTHERN ILLINOIS. COLD AIR
ADVECTION IS INCREASING WITHIN THE UPPER MISSISSIPPI VALLEY IN
RESPONSE. FURTHERMORE, DEEP-LAYER LIFT IS ALSO INCREASING AS
EVIDENCED BY A BROAD AREA OF PRECIPITATION MOVING INTO PARTS OF
NORTHWEST/NORTHERN WISCONSIN. WHILE TEMPERATURES IN SOME AREAS HAVE
BEEN JUST ABOVE FREEZING FOR MOST OF THE MORNING, RECENT SURFACE
OBSERVATIONS HAVE SHOWN DECREASING TEMPERATURES/DEWPOINTS. DYNAMIC
COOLING WITHIN THE HEAVIER PRECIPITATION BANDS HAS ALSO BEEN
EVIDENT. THAT SAID, SNOWFALL SHOULD INCREASE THROUGH THE AFTERNOON.
OBSERVATIONS FROM EAU CLAIRE AND HAYWARD ALREADY SHOW MODERATE
SNOWFALL OCCURRING. AS THE ATMOSPHERIC PROFILE CONTINUES TO COOL,
THE ENVIRONMENT SHOULD BECOME MORE FAVORABLE FOR SNOWFALL RATES UP
TO AROUND 1 INCH PER HOUR THROUGH LATE AFTERNOON/EARLY EVENING.
..WENDT.. 12/28/2025
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...MQT...GRB...DLH...ARX...MPX...
LAT...LON 46479079 46509029 46298948 46128922 45778928 44679108
44269186 44049236 43999277 44059292 44669282 45029257
45429221 46059139 46479079
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