ZCZC SPCSWOMCD ALL
ACUS11 KWNS 171440 
SPC MCD 171440 
MIZ000-INZ000-ILZ000-171545-

Mesoscale Discussion 0469
NWS Storm Prediction Center Norman OK
0940 AM CDT Wed Apr 17 2024

Areas affected...far northeast IL into northern IN and southwest
Lower MI

Concerning...Severe potential...Watch unlikely 

Valid 171440Z - 171545Z

Probability of Watch Issuance...5 percent

SUMMARY...Thunderstorms will gradually develop this morning, mainly
across northwest IN into far southwest MI. Severe potential should
remain low the next 1-2 hours.

DISCUSSION...Visible satellite data and regional radar indicates
convection is beginning to deepen ahead of the eastward advancing
cold front. This activity will likely only slowly continue to
intensify through the morning. Nevertheless, temperatures are
already in the upper 60s to low 70s with weak instability noted in
14z mesoanalysis. Severe potential is expected to remain low over
the next couple of hours, but gusty winds to 45 mph will be possible
with these showers and isolated thunderstorms. A watch is not
expected in the short term, but severe potential should increase by
around midday/early afternoon downstream.

..Leitman/Mosier.. 04/17/2024

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

ATTN...WFO...IWX...GRR...IND...LOT...ILX...

LAT...LON   42578540 42048529 41068556 40608584 40178658 39888731
            39998769 40208784 40688778 41878710 42428634 42778587
            42768560 42578540 

NNNN