191
FNUS22 KWNS 311953
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0253 PM CDT Mon Aug 31 2026

Valid 011200Z - 021200Z

...Northern Great Basin...
A mid-level trough and associated stronger flow aloft enters central
CA on Tuesday. Despite the delayed onset of stronger 40-50 kt
mid-level winds until late afternoon/evening, a surface trough
across the interior Northwest/northern Great Basin coupled with
modest southwest 15-20 knot boundary layer flow will support
southwest surface winds of 10-20 mph across northeastern CA, far
northwestern NV and adjacent south-central OR Tuesday afternoon.
These winds along with relative humidity between 10-15% will bring
an Elevated fire weather to the northern Great Basin where fuels
remain dry and receptive.

...Southeastern Idaho into Yellowstone Country...
A mid-level short wave moving through Great Basin D1/Monday will
shift northeastward into the northern High Plains by the end of
D2/Tuesday. This feature will likely aid in some nocturnal,
high-based convection across southeastern ID into northwestern WY
and adjacent southern MT tonight into early Tuesday morning.
Although the meteorological environment is supportive of dry
thunderstorms including fast northeastward storm motions and
presence of a dry-sub cloud layer, recent rainfall has mitigated
fuel receptiveness limiting the overall fire weather threat.

..Williams.. 08/31/2026

.PREV DISCUSSION... /ISSUED 1205 AM CDT Mon Aug 31 2026/

...Synopsis...
An offshore upper low will evolve into an open wave and approach the
northern California coast by Tuesday afternoon. By Wednesday
morning, the mid-level jet will pivot into the northern Great Basin.
Similar to Monday, a surface trough will develop in the Northwest
into much of the western Great Basin. Downslope winds will likely be
stronger than on Monday, however. Winds could reach 15-20 mph with
localized 20-25 mph possible. The late timing of the mid-level jet
will tend to mitigate a greater fire weather threat. RH will again
fall to 15-20%. Very dry fuels will continue to support an elevated
fire weather threat.

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

$$