ACUS11 KWNS 102319
SWOMCD
SPC MCD 102318=20
MIZ000-110045-

Mesoscale Discussion 1076
NWS Storm Prediction Center Norman OK
0618 PM CDT Wed Jun 10 2026

Areas affected...much of Michigan

Concerning...Severe Thunderstorm Watch 306...

Valid 102318Z - 110045Z

The severe weather threat for Severe Thunderstorm Watch 306
continues.

SUMMARY...Damaging winds are expected to persist through the
evening. A downstream watch may be needed.

DISCUSSION...A mature squall line continues to move across Michigan
this evening. An unstable airmass is present ahead of this line with
2000 to 2500 J/kg MLCAPE (per SPC mesoanalysis). This line is
appears to be becoming more outflow dominant through time as it
moves east of the stronger mid-level flow. However, given the
unstable environment, and some strengthening of the low-level jet
this evening, this line of storms could continue east of Severe
Thunderstorm Watch 306. If this line of storms appears to remain
severe as it moves east, a downstream watch may be needed.
Additionally, storm activity is being monitored in Gratiot County.
If this storm continue to intensify, a downstream watch may be
issued in the relatively short term.

..Bentley/Smith.. 06/10/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5ljKbzPV0Rv-NP1_XCwrxNDFSWXrQcVwYKWhrfTHlm9ozQgAhDcVvBdxEvBn7M2PCnaXd39fQ= oet9OToX9BdGYaQq-E$ for graphic product...

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

LAT...LON 41978484 42248558 42818566 43428583 44148586 44708578
44898495 44798410 44308360 44088297 43578262 43078263
42518293 42198318 42018352 41928417 41978484=20

MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


=3D =3D =3D
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