293
ACUS03 KWNS 200715
SWODY3
SPC AC 200714

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0214 AM CDT Sun Sep 20 2026

Valid 221200Z - 231200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PARTS OF THE
SOUTHERN APPALACHIANS INTO THE SOUTHEAST...

...SUMMARY...
Isolated wind damage may occur with the stronger storms across
portions of the southern Appalachians into the Southeast on Tuesday.

...Synopsis...
The upper-air pattern is poised to amplify some on Tuesday, with
upper ridging building back into the Plains states as positively
tilted upper troughs become established over the OH/TN Valleys and
the Southwest. A surface cold front will continue to usher southward
from TX to the Gulf coastal region through the day on Tuesday,
encouraging thunderstorm development. 1500+ J/kg of tall/thin
MLCAPE, driven by mid 60s F surface dewpoints, will be present from
the southern Appalachians to the Southeast. As such, the stronger
storms in this area will be capable of producing a few wet
downbursts, with isolated tree/wire damage possible.

..Squitieri.. 09/20/2026

$$