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Mesoscale Discussion 2015
NWS Storm Prediction Center Norman OK
0246 PM CDT Tue Aug 27 2024

Areas affected...central into eastern Lower Michigan

Concerning...Severe Thunderstorm Watch 656...

Valid 271946Z - 272145Z

The severe weather threat for Severe Thunderstorm Watch 656
continues.

SUMMARY...Storms over central Lower Michigan continue to pose a
strong to severe wind threat, with gusty wind potential spreading
east over the next several hours.

DISCUSSION...Storms with extensive outflow have pushed across Lake
MI and into western MI, producing locally severe gusts. Although
current radar presentation shows rather broken cell structures,
fast-moving outflow continues to push east.  

Given the strongly unstable air mass developing ahead of the
outflow, some severe potential will likely spread eastward through
the afternoon, with strong to locally severe gusts. Shear remains
weak but new development is possible along the outflow with some
degree of forward propagation expected. Also aided downdraft
potential are precipitable water values in excess of 1.75" and
steepening low-level lapse rates into the peak heating hours.

..Jewell/Guyer.. 08/27/2024

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...DTX...APX...IWX...GRR...

LAT...LON   42038330 41878468 41918505 42358551 42778555 43158535
            43688502 44058476 44198454 44228323 44108293 43508237
            42768252 42288291 42038330