MD 1976 CONCERNING HEAVY SNOW FOR PORTIONS OF EASTERN MINNESOTA INTO NORTHWEST WISCONSIN
Mesoscale Discussion 1976
NWS Storm Prediction Center Norman OK
0945 AM CST Tue Nov 29 2022
Areas affected...Portions of eastern Minnesota into northwest
Wisconsin
Concerning...Heavy snow
Valid 291545Z - 292145Z
SUMMARY...Areas of 1 inch per hour snow rates are possible in
eastern Minnesota into northwest Wisconsin this afternoon. The
heaviest snowfall rates should occur from 12 PM to 4 PM CST.
DISCUSSION...A band of snow within the Upper Midwest has produced
generally light to moderate snowfall rates from southwestern
Minnesota into far northwest Wisconsin. Recent observations within
the last hour near the Twin Cities indicate snowfall rates of 1 inch
per hour are occurring. This broad area of snow is being driven by
850-700 mb frontogenesis. Through the afternoon, the upper trough
over the northern Plains is expected to become more negatively
tilted as it progresses into the Upper Midwest and Great Lakes
regions. At the surface, a low currently in northwest Missouri
should track northeastward and deepen. This should act to increase
the frontogenetic forcing and lead to snowfall rates of 1 inch per
hour, particularly within locally heavier snow bands. Heavier
snowfall rates will move from southwest to northeast along with the
better low/mid-level ascent from about 12 PM to 4 PM CST.
..Wendt.. 11/29/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MQT...DLH...ARX...MPX...DMX...
LAT...LON 45009388 46029320 46809251 47489153 47539062 47139000
46308993 45059125 44269203 43489320 43549365 44109440
45009388
