|Mesoscale Discussion 944|
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Mesoscale Discussion 0944
NWS Storm Prediction Center Norman OK
0558 PM CDT Sat Jun 03 2017
Areas affected...Portions of eastern Upper MI...western Lower
MI...and eastern/central WI
Concerning...Severe Thunderstorm Watch 304...
Valid 032258Z - 040030Z
The severe weather threat for Severe Thunderstorm Watch 304
SUMMARY...An isolated damaging wind/large hail threat continues
across mainly southern portions of WW 304. Downstream watch issuance
into western Lower MI is unlikely.
DISCUSSION...As of 2250Z, a small cluster of thunderstorms is moving
southeastward along an instability gradient across eastern Upper MI
and northeastern WI. This cluster has produced isolated damaging
wind gusts over the past few hours, and it should remain capable of
isolated strong to locally damaging winds and perhaps marginally
severe hail over the next several hours. VWP from KMQT shows a
veering/strengthening wind profile with height, and 30-35 of
effective bulk shear will continue to promote some storm
organization with the ongoing convective cluster. Farther to the
southwest (across central WI), mid-level flow is weaker per VWP from
KARX, and thunderstorms have remained less organized. An isolated
severe risk should continue across mainly the southern half of WW
304 as storms move southeastward. Downstream watch issuance into
western Lower MI appears unlikely owing to an increasingly hostile
thermodynamic environment with eastward extent.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 44929074 45388994 45758869 45978782 46458711 46158642
45478512 45138508 44428543 43918597 43598674 43768934
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