Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Fri Sep 26 2025 06:55:32

ACUS03 KWNS 260655
SWODY3
SPC AC 260654

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0154 AM CDT Fri Sep 26 2025

Valid 281200Z - 291200Z

....NO SEVERE THUNDERSTORM AREAS FORECAST...

....SUMMARY...
The risk for severe thunderstorms appears negligible across the U.S.
Sunday through Sunday night.

....Discussion...
It appears that amplified troughing within the mid-latitude
westerlies will continue to slowly advance inland of the North
American Pacific coast during this period.  As this occurs,
downstream ridging is forecast to become more amplified across the
Canadian Prairies, while flow farther east trends at least broadly
cyclonic across the eastern Canadian provinces through the
northwestern Atlantic.

Within the southern mid- and subtropical latitudes to the south and
east of this regime, shorter wavelength developments within
generally weak flow remain much more unclear due to sizable model
spread.  However, broad, weak mid-level troughing may continue to
shift northeastward out of the Southwest through southern Rockies,
while large-scale weak mid-level troughing lingers across the
Southeast.  It appears that a pair of evolving tropical cyclones may
continue to progress west-northwestward across parts of the
southwestern Atlantic through Bahamas vicinity, to the southwest of
a notable high centered near Bermuda.

Similar to Saturday, due to generally weak deep-layer mean wind
fields and rather modest to weak diurnal destabilization, the risk
for severe thunderstorms across the U.S. appears negligible.
However, scattered afternoon and evening thunderstorm development
appears probable across parts of the Intermountain West and Rockies,
as well as across parts of the Southeast.

...Kerr.. 09/26/2025

$$

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