Storm Prediction Center issues Mesoscale Discussion #1224 concerning SEVERE POTENTIAL...WATCH POSSIBLE [watch prob: 60%] [Most Prob: Hail: UP TO 1.25 IN, Gust: 55-70 MPH]
100
ACUS11 KWNS 091818
SWOMCD
SPC MCD 091817
MIZ000-OHZ000-INZ000-091945-
Mesoscale Discussion 1224
NWS Storm Prediction Center Norman OK
0117 PM CDT Mon Jun 09 2025
Areas affected...portions of Michigan
Concerning...Severe potential...Watch possible
Valid 091817Z - 091945Z
Probability of Watch Issuance...60 percent
SUMMARY...Thunderstorms capable of damaging wind and hail to
increase through the afternoon.
DISCUSSION...Thunderstorms have been increasing in coverage across
Lake Michigan as forcing for ascent increases with an upper-level
wave approaching. Across the Michigan peninsula, cumulus is
increasing as well. Daytime heating has yielded MLCAPE around
250-500 J/kg. Enhanced flow aloft with the wave and steep lapse
rates will support potential for damaging winds and some instances
of severe hail. This area is being monitored for a potential watch
this afternoon.
..Thornton/Mosier.. 06/09/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DTX...APX...IWX...GRR...
LAT...LON 42008667 42908662 43778655 44478623 44848593 44568373
44178339 43528327 42668357 41958378 41528416 41228534
41358635 42008667
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
Source: Storm Prediction Center issues Mesoscale Discussion #1224 concerning SEVERE POTENTIAL...WATCH POSSIBLE [watch prob: 60%] [Most Prob: Hail: UP TO 1.25 IN, Gust: 55-70 MPH] (https://www.spc.noaa.gov/products/md/2025/md1224.html)
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