ACUS11 KWNS 120602
SWOMCD
SPC MCD 120602
SDZ000-NEZ000-120730-

Mesoscale Discussion 1945
NWS Storm Prediction Center Norman OK
0102 AM CDT Wed Aug 12 2026

Areas affected...northern NE and southern SD

Concerning...Severe Thunderstorm Watch 572...

Valid 120602Z - 120730Z

The severe weather threat for Severe Thunderstorm Watch 572
continues.

SUMMARY...A maturing bow will continue to yield a risk for
higher-end wind potential over the next 1-2 hours as it moves into
northern portions of NE.

DISCUSSION...Latest radar imagery from KFSD/KUDX shows a potent
cluster evolving into a maturing bow along the NE/SD border with
echo tops increasing in the past 30 minutes to 60 kft. The airmass
remains very unstable per RAP forecast soundings (around 4000 J/kg
MUCAPE) with modest lower to mid-level flow (20-25 kt) increasing to
60 kt around 250 mb. This thermodynamic/kinematic environment will
continue to strongly favor severe gusts and a continuation of the
mature phase of the bow echo through at least 2-3am CDT. Recently
measured gusts in the 90-95 mph range in southern SD are indicative
of the higher-end wind potential.

..Smith.. 08/12/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!-Jy95fNB45z8N1jA_YsDTaWgJcD2_EmhBOJa5ZIUQZH8_YvbQXi1xjGFQWfE7KKQMc5jCGVMM1qXeKhD4db8s9X4TXQ$ for graphic product...

ATTN...WFO...FSD...ABR...LBF...UNR...

LAT...LON 43620019 43529937 43109832 42619832 42279885 42359984
42770085 42950091 43180038 43620019

MOST PROBABLE PEAK WIND GUST...85-100 MPH


= = =
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.
--- scorpsmtpd
* Origin: capitolcityonline.net * KY, USA (1:2320/107)