Severe Storm Outlook Narrative (AC)
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ACUS11 KWNS 140049
SWOMCD
SPC MCD 140048
ILZ000-MOZ000-IAZ000-140215-
Mesoscale Discussion 1255
NWS Storm Prediction Center Norman OK
0748 PM CDT Thu Jun 13 2024
Areas affected...Portions of the Midwest
Concerning...Severe Thunderstorm Watch 408...409...
Valid 140048Z - 140215Z
The severe weather threat for Severe Thunderstorm Watch 408, 409
continues.
SUMMARY...Severe thunderstorm complex will propagate southeast this
evening. New Severe Thunderstorm Watch may be warranted downstream.
DISCUSSION...Numerous robust thunderstorm clusters are gradually
merging into a larger complex early this evening. Over the last hour
or so, an expanding precip shield is beginning to evolve and an MCS
now appears imminent as the convection propagates southeast.
Sustained southwesterly 1km inflow appears to be aiding new updrafts
along the western flank of the MCS over northern MO. The majority of
large hail reports have been noted across this region, and latest
MESH data suggests this continues. Given the upscale growth and the
available reservoir of instability immediately downstream over
east-central MO into central IL, there is increasing confidence the
leading edge of this activity will spread beyond ww0409 shortly. New
ww may be warranted soon.
..Darrow.. 06/14/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LOT...ILX...LSX...DVN...EAX...
LAT...LON 40868864 39198833 38449087 39859342 40289142 41389057
40868864