381
ACUS03 KWNS 171910
SWODY3
SPC AC 171909

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0209 PM CDT Wed Sep 17 2025

Valid 191200Z - 201200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Organized severe storms are not currently expected on Friday.

...Synopsis...
A mid/upper-level trough is forecast to remain in place across the
central/northern Plains and Upper Midwest on Friday, as an embedded
midlevel cyclone moves eastward across SD. Scattered diurnal storm
development will be possible from the ArkLaTex into much of the MS
Valley, within a relatively moist and moderately unstable
environment. With weak deep-layer flow/shear expected across this
region, the threat for organized severe storms currently appears
low. Late in the period, elevated storms may develop within a
low-level warm advection regime across parts of KS/OK.

Farther west, a midlevel shortwave trough is forecast to move from
central CA toward the Great Basin, while a broader mid/upper-level
trough remains offshore of southern CA. This pattern will favor
potential for scattered storms across parts of the Southwest, with
at least isolated storm development possible from central/northern
CA into adjacent parts of NV.

..Dean.. 09/17/2025

$$