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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1046 AM CDT Wed Aug 31 2022

Valid 311700Z - 011200Z

No changes to the ongoing forecast.

..Wendt.. 08/31/2022

.PREV DISCUSSION... /ISSUED 0103 AM CDT Wed Aug 31 2022/

...Synopsis...
Fire weather concerns will remain confined to the northern Great
Basin and Pacific Northwest for today as winds increase in response
to a weak upper disturbance moving into the region. Early-morning
water-vapor imagery depicts a low-amplitude upper wave approaching
the northern CA coast. This feature will continue to move northeast
through the day, and will foster increasing mid-level flow and
thunderstorm chances over the region.

...Northern Great Basin and Columbia Gorge...
Elevated fire weather conditions are expected from northeast
CA/northwest NV into southern OR and through the Columbia Gorge. 00
UTC soundings along the West Coast sampled increasing
mid/upper-level winds associated with the approaching upper wave.
Such winds will overspread the northern Great Basin and Pacific
Northwest through the day and support sustained surface winds
between 15-20 mph. Deep boundary-layer mixing will foster frequent
gusts between 25-35 mph, especially near terrain features. The
driest conditions are expected across northeast CA/northwest NV into
southern OR with afternoon RH minimums in the teens likely. To the
north through the Columbia Gorge, better overnight RH recovery is
noted, and some moisture advection through the Gorge will moderate
RH reductions to some degree. However, minimum RH values in the low
to mid 20s appear probable based on latest ensemble guidance, and
should support elevated fire weather conditions. 

...Dry thunderstorms...
The 00 UTC BOI sounding sampled modest mid-level moisture, which is
noted in water-vapor imagery advecting northward ahead of the
approaching wave. This moisture should support 150-300 J/KG MUCAPE 
by late afternoon across northern WA into northern ID/northwest MT.
Forecast soundings depict a deep, dry boundary layer over this
region with PWAT values near 0.7 inch, which favors dry
thunderstorms. Given the dry fuel status across the area (ERCs
generally above the 90th percentile), a dry-lightning threat appears
likely with any thunderstorm.

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