571
ACUS01 KWNS 010540
SWODY1
SPC AC 010538

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1238 AM CDT Mon Sep 01 2025

Valid 011200Z - 021200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
The severe potential appears relatively low today across the
continental U.S., though a few strong storms will be possible across
parts of the Great Plains.

...DISCUSSION...
At mid-levels, a ridge will be in place across the western U.S.,
with northwesterly flow located from the Rockies eastward to the
Appalachians. A north-to-south corridor of low-level moisture will
present in the Great Plains, where warming surface heating will
contribute to scattered convective initiation. Throughout this
airmass, surface dewpoints will be mostly in the 60s with weak
instability developing by afternoon. Minimal deep-layer shear, poor
lapse rates and a lack of large-scale ascent will limit the severe
weather potential. Further west into the Pacific Northwest, a
mid-level low will remain offshore from the Washington Coast. An
axis of instability will develop across western Washington during
the day. Isolated thunderstorms will be possible in the afternoon,
but the environment should be insufficient for severe storms.
Elsewhere across the continental United States, no severe threat is
expected.

..Broyles/Moore.. 09/01/2025

$$