238
ACUS48 KWNS 130822
SWOD48
SPC AC 130820

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0320 AM CDT Sun Sep 13 2026

Valid 161200Z - 211200Z

...DISCUSSION...
Latest medium-range model output indicates that the initially
prominent Southeastern mid-level ridge will slowly retrograde
west-southwestward and become increasingly suppressed across the
lower latitudes late this coming work week into next weekend.
However, it appears that the evolving westerlies across the U.S.
will remain modest to weak, with little potential for appreciable
surface cyclogenesis.  While guidance suggests some continuing
potential for widely scattered strong thunderstorm development near
a lingering frontal zone across the Ohio into lower Missouri Valley
on Wednesday, it appears that this will diminish thereafter, with
generally negligible risk for organized severe thunderstorm
potential into and through next weekend.

..Kerr.. 09/13/2026