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Mesoscale Discussion 1609
NWS Storm Prediction Center Norman OK
0659 AM CDT Fri Aug 28 2020
Areas affected...southeast MN...northern IA and western WI
Concerning...Severe Thunderstorm Watch 462...
Valid 281159Z - 281330Z
The severe weather threat for Severe Thunderstorm Watch 462
continues.
SUMMARY...Gusty winds may accompany thunderstorms across the MCD
area this morning, but overall severe potential has diminished.
DISCUSSION...A line of thunderstorms has mostly moved out of WW 462
this morning, and stretches from west-central WI into southeast MN
and far north-central IA. Overall, instability decreases with east
and south extent and substantial boundary layer inhibition is
present. The strongest portion of the line will move across parts of
northern IA over the next couple of hours. A modest southwesterly
low level jet of around 25-30 kt remains over this area. Some gusty
winds are possible with this activity, but overall weak instability
and low level inhibition will limit severe potential. As a result,
WW 462 could be cancelled before the 14z expiration time, and a
downstream watch is not expected.
..Leitman.. 08/28/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ARX...MPX...DMX...
LAT...LON 45499194 45499116 44949046 44329041 43799065 43429100
43169151 42989269 42999314 43029436 43329468 43779391
44119295 44679243 45289246 45429226 45499194
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