MD 0364 CONCERNING SEVERE THUNDERSTORM WATCH 81… FOR FAR EASTERN ILLINOIS…SOUTHERN INDIANA…AND PORTIONS OF WEST-CENTRAL KENTUCKY.
Mesoscale Discussion 0364
NWS Storm Prediction Center Norman OK
0724 PM CDT Wed Mar 30 2022
Areas affected...Far eastern Illinois...southern Indiana...and
portions of west-central Kentucky.
Concerning...Severe Thunderstorm Watch 81...
Valid 310024Z - 310200Z
The severe weather threat for Severe Thunderstorm Watch 81
continues.
SUMMARY...A damaging wind threat will continue through the late
evening.
DISCUSSION...The squall line has become less organized over the past
hour across west-central Kentucky, eastern Illinois, and southwest
Indiana with multiple linear segments now apparent on reflectivity.
Despite this seemingly less organized appearance, wind damage
reports have actually increased recently with measured gusts of 73
and 75 mph. This may be due to a deeper mixed airmass with the
warmer temperatures and larger dewpoint depressions storms are
moving into. 80 knot flow is observed around 2km on the HPX VWP and
LCLs are above 2km in eastern portions of watch 81 according to SPC
mesoanalysis. Therefore, some of this stronger flow may continue to
mix to the surface with these storms with the potential even for a
significant (75+ mph) wind gust. Eventually, instability should
become too limited to support continued robust convection and
eventual decay is expected. However, in the meantime, the threat for
damaging winds will likely continue.
..Bentley.. 03/31/2022
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ILN...LMK...IND...PAH...ILX...
LAT...LON 38848781 39368768 39538661 39368576 38838515 37968512
37428561 36978673 37008727 37148762 37468782 38848781
