917
ACUS48 KWNS 230750
SWOD48
SPC AC 230748

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0248 AM CDT Fri Oct 23 2026

Valid 261200Z - 311200Z

...DISCUSSION...
A series of upper troughs will move across portions of the northern
and central U.S. during the Day 4-8 period. Around the middle of the
work (Day 6/Wed), a larger-scale upper trough is forecast to develop
across the Plains and Midwest, and eventually the eastern U.S. by
the weekend. As this occurs, a cold front will develop southeast
across much of the CONUS east of the Rockies. While this will likely
support some thunderstorm and shower activity, boundary layer
moisture will remain limited, and only weak instability is forecast
and will largely remain displaced from stronger deep-layer flow.
Overall, severe potential appears low through Day 8/Fri.

..Leitman.. 10/23/2026