159
FNUS28 KWNS 072145
FWDD38

Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0443 PM CDT Mon Sep 07 2026

Valid 091200Z - 151200Z

...Discussion...
Upper troughing will transition into the Great Lakes on Day
3/Wednesday, allowing high pressure to temporarily build into the
northern Great Basin. On Day 4/Thursday, a mid-level shortwave
trough will descend into the northwestern U.S., promoting widespread
dry and breezy conditions across the region and into the northern
Plains. A surface low will strengthen across the Dakotas as the
associated shortwave trough departs; meanwhile, west-southwesterly
flow will overspread the northwestern CONUS on Day 5/Friday.
Ensembles are in general agreement for an upper-level low to
traverse the Pacific Northwest and Northern Rockies this weekend.
This pattern may provide broader precipitation chances and much
cooler temperatures, thus subduing fire weather concerns across most
of the northwestern/northern CONUS.

A dry airmass and strong westerly winds will expand across the
northern Great Basin into the northern Plains on Day 4/Thursday.
While such meteorological conditions would typically enhance fire
weather concerns, the overlap of critical RH/winds is displaced from
drier fuels. However, should these conditions expand over a more
receptive fuelscape (particularly eastern Wyoming and western South
Dakota), critical probabilities may be warranted in future outlook
cycles. A southward progressing cold front may bring much cooler
temperatures to the High Plains to end the work-week, though strong
winds and low RH along/ahead of the front could revitalize fire
concerns where fuels remain receptive.

..Elizalde-Garcia.. 09/07/2026

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

$$