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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1254 AM CDT Fri Sep 02 2022

Valid 021200Z - 031200Z

...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE NORTHERN GREAT
BASIN AND SOUTHERN OREGON...

...Synopsis...
Great Basin ridging is forecast to remain in place over the next
several days, but will deamplify slightly as a shortwave trough
impinges on its western periphery late tonight. Ahead of the
approaching trough, strengthening flow over the northern Sierra will
bolster low-level winds across the northern Great Basin and portions
of the Northwest. At the same time, a weak cold front will move into
the Plains supporting dry and breezy post-frontal conditions.
Elevated to critical fire weather conditions are possible across the
Great Basin and central Plains.

...Northern Great Basin to the southern Cascades...
Ahead of the trough moving onshore across the West Coast, mid-level
flow is forecast to increase late in the day across portions of
northern CA/NV, into southern OR. Dry downslope flow from the
Sierra, and warm diurnal temperatures will result in afternoon RH
values of 10-15%. As flow aloft strengthens, occasional gusts of
15-25 mph should develop within the warm and dry airmass. With area
fuels critically dry, spotty critical fire weather conditions appear
probable into the evening hours. 

Farther north, enhanced westerly flow through terrain gaps in the
lee of the Cascades may occasionally gust to 15-20 mph through the
afternoon. With very warm temperatures expected RH values are
forecast to fall to near 30%. Dry and unstable condition may support
a few hours of locally elevated fire weather concerns mainly across
portions of interior WA where fuels are very dry. 

...Central Plains...
In the wake of a cold front moving south out of the northern Plains,
gusty northwest winds are expected within a modestly dry
post-frontal airmass across portions of western NE and northern CO.
While RH will be marginally supportive (25-30%) the gusty winds and
locally dry fuels should support a few hours of elevated fire
weather risk through the afternoon. Fire concerns will decrease
quickly this evening and overnight as better humidity recoveries
develop within the cooler air behind the front.

..Lyons.. 09/02/2022

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