ACUS11 KWNS 201358
SWOMCD
SPC MCD 201358=20
ILZ000-MOZ000-201530-
Mesoscale Discussion 1639
NWS Storm Prediction Center Norman OK
0858 AM CDT Thu Jul 20 2023
Areas affected...East-central MO into central/southern IL
Concerning...Severe potential...Watch possible=20
Valid 201358Z - 201530Z
Probability of Watch Issuance...40 percent
SUMMARY...Isolated severe storms will remain possible into mid
morning, with a threat of hail and locally damaging wind. Watch
issuance is possible if storm coverage and intensity continue to
increase.
DISCUSSION...Storm intensity has recently increased along the
periphery of a large storm cluster, with isolated supercells
recently noted north of St. Louis and northwest of Paducah, and a
small outflow surge southwest of St. Louis. Ongoing storms are
likely somewhat elevated, but with rich low-level moisture in place,
diurnal heating may aid in a transition to surface-based convection,
with an attendant potential increase in storm intensity.=20
Midlevel lapse rates are not overly steep, with modestly warm
temperatures aloft, but any sustained supercell could pose some hail
threat. Locally damaging winds will also be a risk, though the
potential for organized upscale growth may be limited in the short
term. The need for watch issuance through mid morning is uncertain,
due to uncertainty regarding the short-term coverage of the severe
threat, but remains possible if storm coverage and intensity
continues to increase.
..Dean/Gleason.. 07/20/2023
...Please see
https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!6MVw3O3nSzDTRAqRfW-KPCxCR703cTsTe1XrOespr3Gha-wOzu-V3JA0QqzLw62CfdJ6cYQpq= 4Quc3gEQCc2AEzfX8A$ for graphic product...
ATTN...WFO...ILX...LSX...
LAT...LON 38289163 38569107 38829049 39129038 39339036 39849015
39718935 39238895 38708912 38208975 38099089 38289163=20
=3D =3D =3D
To unsubscribe from WX-STORM and you already have a login, go to
https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at
cnovy@cox.net and ask to be removed from WX-STORM.
--- SBBSecho 3.14-Linux
* Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)