|Mesoscale Discussion 1355|
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Mesoscale Discussion 1355
NWS Storm Prediction Center Norman OK
0632 PM CDT Wed Jul 19 2017
Areas affected...Southeast MN...Northeast IA...Southwest WI
Concerning...Severe Thunderstorm Watch 421...
Valid 192332Z - 200030Z
The severe weather threat for Severe Thunderstorm Watch 421
SUMMARY...Severe threat will decrease from west to east across WW421
with leading edge of squall line expected to exit the watch shortly
DISCUSSION...Long-lived MCS is progressing steadily southeast at
45-50kt and should exit the eastern portions of WW421 within the
next hour. Damaging winds remain likely along the leading edge of
the squall line and this is the primary threat as the MCS moves
toward southern WI/northern IL.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 44029303 43719021 42699021 42999306 44029303
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