592
FNUS28 KWNS 262135
FWDD38

Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0434 PM CDT Sat Sep 26 2026

Valid 281200Z - 041200Z

...Synopsis...
An upper-level low cut off from stronger westerly flow along the
northern tier states will gradually progress eastward from the Great
Basin D3/Monday reaching the southern/central Plains through
D6/Friday. Additionally, abundant remnant moisture from tropical
cyclone activity in the northeast Pacific will be transported
northeastward into the Southwest and eventually the central/southern
Plains through the week. The eastward progressing low along with
ample atmospheric moisture should result in widespread wetting
rainfall across the Southwest and much of the Great Plains, muting
fire weather concerns. Farther north, an embedded mid-level short
wave should promote a fire weather threat to north-central MT on
D4/Tuesday as stronger westerly winds develop. Dry and breezy
conditions could return to portions of northeastern CA and
northwestern Great Basin sometime late next week as an upper trough
enters the Pacific Northwest, but forecast uncertainty in timing and
magnitude limits predictability for this outlook.

...Day 4/Tuesday - North-central Montana...
An embedded wave within 50-60 knot mid-level westerly flow across
U.S./Canada border will pass through MT D4/Tuesday. Enhanced west
winds of 15-20 mph and downslope drying should support a fire
weather concern for portions of north-central MT Tuesday where
recent rainfall deficits and drier fuels exist. 40% critical
probabilities were added to highlight this threat.

...Day 3-5/Monday-Wednesday - Southern California...
The upper low across the Southwest will translate east as weak
ridging (and related surface high pressure) builds into the
Intermountain West through midweek. This should support a period of
dry, offshore flow across southern CA beginning late Day 3/Monday
with a diminishing surface pressure gradient heading into Day
5/Wednesday. However, fuels remain marginal across the region which
would attenuate impact from the dry and breezy conditions,
precluding introduction of critical probabilities.

..Williams.. 09/26/2026

...Please see www.spc.noaa.gov/fire for graphic product...

$$