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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0200 AM CDT Mon Aug 01 2022

Valid 011200Z - 021200Z

...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF CENTRAL INTO EASTERN
MONTANA...

...Synopsis...
A large-scale ridge will remain centered over the western CONUS,
while a belt of enhanced west-northwesterly midlevel flow extends
from the Pacific Northwest into the northern/central Plains along
the northern periphery of the ridge. Within the west-northwesterly
flow, an embedded shortwave trough and acco*panying strong flow
aloft will cross the northern Rockies, while a surface low deepens
over eastern MT. 

...Northern Rockies into the adjacent High Plains...
As the belt of enhanced west-northwesterly flow overspreads the
Rockies and adjacent High Plains, downslope warming/drying and deep
boundary-layer mixing will result in a broad area of elevated
fire-weather conditions. Along the periphery of the deepening
surface low, a corridor of stronger sustained west-northwesterly
surface winds near 20 mph will overlap 10-15 percent minimum RH
across portions of central into eastern MT -- where critical
fire-weather conditions are forecast.

...Lee of the Cascades in WA and northern OR...
The enhanced west-northwesterly downslope flow will support elevated
to locally critical conditions in the lee of the northern Cascades,
where 15-20 mph westerly surface winds will overlap 10-15 percent
RH. 

...Dry Thunderstorms...
Along the northern periphery of the ridge, a series of subtle
midlevel impulses coupled with sufficient midlevel
moisture/instability will favor high-based thunderstorms from the
Cascades eastward into the northern Rockies. While many of these
storms will be a hybrid wet/dry mode, any lightning strikes away
from precipitation cores could lead to new fire starts owing to
highly receptive fuels over the area.

..Weinman.. 08/01/2022

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