515
FNUS22 KWNS 031940
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0239 PM CDT Thu Sep 03 2026

Valid 041200Z - 051200Z

...Portions of the Northern Rockies and the Northern High Plains...
An upper-level trough will remain over the Pacific Northwest while
modest southwesterly flow aloft will persist over the northern
Rockies and northern High Plains through D2/Friday. South-southwest
winds are likely to remain elevated tonight as a surface low deepens
across north-central MT into Friday. This surface low along with a
amplifying low-level jet at 850 mb over the region will support poor
overnight recoveries, only rising to 25-30% in some locations. A
very dry boundary layer will persist through Friday across eastern
WY and portions of the northern High Plains. RH reductions by
mid-afternoon will be 10-15% across south-central MT and central WY
with sub 10% RH most likely farther east across the northern High
Plains. South to southwest winds of 15-20 mph aligned with low RH
and receptive fuels will promote an elevated fire weather across the
area Friday afternoon.

...Great Basin...
Similarly dry, southwest flow southeast of the upper trough across
the Pacific Northwest is expected across southeastern portions of
the Great Basin Friday. Marginal fuels across southeastern NV and
southwestern UT should mitigate a broader fire weather threat but
localized elevated fire weather conditions could impact locations
where recent rainfall was minimal and pockets of dry fuels remain.

..Williams.. 09/03/2026

.PREV DISCUSSION... /ISSUED 1248 AM CDT Thu Sep 03 2026/

...Synopsis...
An additional day of Elevated fire weather conditions can be
expected across the northern High Plains on Day 2/Friday. With the
persistent large trough dominating the Northwestern CONUS, an
upper-level jet streak will round it`s base and allow for stronger
winds centered over ID on the afternoon of Day 2/Friday. Given the
continued compact surface pressure gradient and well-mixed boundary
layer over the region, windy and dry conditions will impact the
surface, resulting in afternoon sustained southwesterly winds of
15-20 mph coincident with RHs of 10-20%. Again, portions of the
southern to central Great Basin will experience similar wind/RH
conditions, but fuels remain less receptive to ignitions. Meanwhile,
upper-level ridging remains over the central CONUS, prolonging hot
and dry conditions in the central and southern Great Plains. This
continues to cure both dead and live fuels in the absence of
widespread beneficial precipitation.

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

$$