713
FNUS22 KWNS 031953
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0252 PM CDT Thu Jul 03 2025

Valid 041200Z - 051200Z

...CRITICAL FIRE WEATHER AREA FOR SOUTHEASTERN NEVADA AND SOUTHWEST
UTAH...

...Great Basin...
A mid-level trough moving into the Northwestern U.S. will introduce
stronger mid-level winds as well as introducing an increasingly dry
air mass into the region Friday. Development a dry and well-mixed
boundary layer across much of Nevada along with sustained southwest
surface winds of 15-25 mph and relative humidity falling to around
15% will support a critical fire weather threat across southeastern
NV and southwestern UT Friday afternoon. Recent observed rainfall
across this area has been minimal, allowing fuels to largely remain
receptive to wildfire spread. An elevated fire weather threat
remains over much of western and northern Nevada.

...Southeast Oregon...
The aforementioned mid-level trough will also promote isolated to
scattered thunderstorms across southeastern OR and far northeastern
CA/far northwestern NV. Nocturnal thunderstorms will likely be
ongoing across southeastern Oregon early Friday owing to a more
supportive convective environment from the mid-level trough and
associated jet. Additional shower and thunderstorm development is
likely Friday afternoon amid an increase in daytime destabilization.
Recent rainfall across southeast Oregon has been limited allowing at
least some fuels to remain receptive to potential lightning
ignitions.

..Williams.. 07/03/2025

.PREV DISCUSSION... /ISSUED 0211 AM CDT Thu Jul 03 2025/

...Synopsis...
Western US troughing will intensify and shift eastward Friday as
westerly flow aloft overspreads the Great Basin. Dry downslope winds
are expected over much of the West. Elevated to critical
fire-weather conditions are possible, along with a few thunderstorms
Friday.

...Great Basin and Northern Rockies...
Westerly flow aloft is forecast to increase as the shortwave trough
over the West moves eastward. Dry downslope flow and warm
temperatures are expected across much of NV into western UT Friday.
Widespread westerly winds of 15-20 mph are expected. The stronger
dry, southwest flow will advected drier air across the much of NV
and southwest UT, resulting in a deep, well mixed boundary layer and
low surface relative humidity. Dry and deep boundary layer will also
support RH below 15%. Widespread elevated and locally critical
conditions are likely. Especially across southern NV into southwest
UT, where winds may approach 25 mph sustained with RH below 15%.

Along the eastern periphery of the drier air, isolated showers and
thunderstorms are possible again. Recent rainfall has reduced fuel
receptiveness across much of the Western Slope and eastern Great
Basin. Some lightning may occur with a mix of wet and dry storms
from ID, into southern MT, WY, and northern CO. However, the mixed
fuels, and another potential round of wetting rainfall suggests the
threat for dry strikes over receptive fuels is low.

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

$$