575
FNUS22 KWNS 171958
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0257 PM CDT Thu Jul 17 2025

Valid 181200Z - 191200Z

A mid-level trough coming into the Pacific Northwest interacting
with peripheral monsoon moisture will support mainly dry, isolated
high-based thunderstorms across portions of northeastern NV into
southeastern ID where pockets of receptive fuels remain. Farther
southeast across the Greater Four Corners region, deeper monsoon
moisture (precipitable water values greater than 0.80") will support
heavier precipitation cores from thunderstorms, mitigating new
ignition potential. Otherwise, dry and breezy conditions east of the
Cascades are still expected as westerly flow increases from the
deepening Pacific Northwest trough. An elevated fire weather threat
remains with locally critical conditions possible in favored Cascade
gaps amid dry fuels.

..Williams.. 07/17/2025

.PREV DISCUSSION... /ISSUED 1258 AM CDT Thu Jul 17 2025/

...Synopsis...
A deeper trough will traverse the Pacific Northwest on D2/Friday
bringing more widespread Elevated conditions across the areas along
and east of the Cascades. Afternoon relative humidity around 10-20
percent will overlap sustained westerly winds at 10-15 mph (locally
higher). Some locally Critical conditions may persist for a couple
of hours where terrain enhancements favor locally stronger winds in
the Cascade Gaps.

...Dry Thunderstorms...
The western shortwave will bring forcing for ascent across portions
of northern Nevada into southern Idaho and eastern Wyoming. This
area remains on the periphery of deeper moisture across the
Southwest into the Great Basin. High based convection and very dry
boundary layer conditions will favor little to no measurable
precipitation with potential for new ignitions from lightning.

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

$$