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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1126 AM CDT Tue Aug 20 2024

Valid 201700Z - 211200Z

...17z Update...
Minimal changes were made to the currently valid outlook. The
Elevated area over portion of ID and MT was trimmed slightly for
thunderstorms ongoing early this morning. Rainfall has tempered
fuels somewhat, though abundant lightning has also occurred. With at
least a few hours of dry and breezy conditions (RH <20% and winds of
15-20 mph) could support elevated fire-weather concerns. Elsewhere,
the prior forecast remains unchanged, see the previous discussion.

..Lyons.. 08/20/2024

.PREV DISCUSSION... /ISSUED 0110 AM CDT Tue Aug 20 2024/

...Synopsis...
Broad southwesterly mid-level flow, associated with a shortwave
trough approaching the northern California Coast, will be
responsible for bringing dry/breezy conditions to the Great Basin
and portions of Idaho/Montana. 

...Dry/Windy...
Deep boundary-layer mixing beneath a modest 40-50kt mid-level jet
will bring dry/windy conditions to portions of Nevada, far
southeastern Oregon/southwestern Utah and portions of southwest
Montana/northeast Idaho, where fuels guidance suggest ERC annual
percentiles range between the 80th and 98th. Elevated fire-weather
conditions are anticipated, with relative humidity values of 5-10%
and winds around 15-20 MPH. Locally critical conditions are possible
across portions of southern and central Nevada, where gusts may
reach 25 MPH. However, this largely overlaps with an area where
fuels are less receptive to wildfire spread, precluding critical
highlights. 

...Dry Thunderstorms...
Some dry thunderstorms are possible across central Utah, where
deeply mixed boundary-layer profiles, surface relative humidity
values of 15-20%, storm motions of around 30 knots, and PWAT values
between 0.5-0.9 will co*bine to support thunderstorm development
while limiting wetting rainfall. However, current fuels guidance
shows ERC annual percentiles below the 50th percentile, precluding
any highlights at this time.

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