622
ACUS03 KWNS 270723
SWODY3
SPC AC 270722

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0222 AM CDT Sun Sep 27 2026

Valid 291200Z - 301200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
No severe thunderstorms are forecast across the U.S. on Tuesday and
Tuesday night.

...DISCUSSION...
At mid-levels on Tuesday, zonal westerly flow will be in place over
the northwestern U.S. with a trough in the northern Plains. An
upper-level low will move across the Desert Southwest. In the
vicinity of this system, scattered thunderstorms will develop during
the day over much of the Southwest. More isolated storms will be
possible from the central Rockies northeastward into the upper
Mississippi Valley. Instability is expected to remain relatively
weak, and no severe threat is forecast across the continental U.S.
Tuesday and Tuesday night.

..Broyles.. 09/27/2026

$$