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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1154 AM CDT Wed Jul 13 2022

Valid 131700Z - 141200Z

The isolated dry-thunderstorm area has been expanded slightly
westward, based on the latest guidance. Otherwise, no changes have
been made. Near critical wind/RH still appears possible across parts
of southwest into central/northeast NV, within a broader region of
elevated conditions covering much of NV into southeast OR/southwest
ID. See the previous discussion below for more details.

..Dean.. 07/13/2022

.PREV DISCUSSION... /ISSUED 0134 AM CDT Wed Jul 13 2022/

...Synopsis...
Fire weather concerns will linger across the Great Basin today due
to a co*bination of hot, dry, and windy conditions as well as the
potential for dry thunderstorms. Monsoonal moisture continues to
spread northward into the Pacific Northwest and northern Rockies per
morning water-vapor imagery. A weak impulse currently along the West
Coast will propagate northeastward along the periphery of the
stagnant Four Corners ridge, which will both induce a mid-level mass
response across the Great Basin and provide lift for thunderstorms
this afternoon. 

...Nevada and adjacent states...
The east/northeastward propagation of the weak West Coast impulse is
expected to result in a modest mass response across the Great Basin
with increasing southerly winds between 800-600 mb. This will aid in
sustaining 15-20 mph winds through central NV with frequent gusts
between 25-30 mph. The downslope trajectories off the southern
Sierra Nevada coupled with warm temperatures will support 10-15% RH
values by mid afternoon across much of the region. While elevated
conditions are expected across much of NV, the greatest fire-weather
concern will likely reside across central to northeastern NV under
the axis of stronger mid-level winds. This zone will see the
greatest potential for critical conditions, through latest ensemble
guidance continues to show only meager support for sustained
critical conditions. 

...Dry Thunderstorms...
Monsoonal moisture was well sampled by 00 UTC soundings across the
much of the western CONUS with PWATs ranging from 0.6-1.0 inch.
Soundings from the Great Basin region, including LKN, SLC, and BOI,
also sampled very dry boundary-layer conditions with mean RH between
15-30%. These conditions supported a mix of dry and wet
thunderstorms yesterday (Tuesday), and are expected to largely
remain in place for today. Lift ahead of the weak West Coast
impulse, co*bined with orographic ascent, should result in another
day of a wet/dry storm mixture across northeast NV into adjacent
areas of UT and ID where fuels largely remain receptive and a weak
QPF signal is noted in most guidance. A few dry thunderstorms are
possible outside of this region to the north across the Pacific
Northwest and into the northern Rockies where similar PWAT values
are expected, but more marginal fuel status preludes a more
expansive risk area.

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