Fire Weather Outlook Discussion
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615
FNUS22 KWNS 051953
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0252 PM CDT Fri Jun 05 2026

Valid 061200Z - 071200Z

...CRITICAL FIRE WEATHER AREA FOR FOR PORTIONS OF THE GREAT BASIN
AND SOUTHWEST...

An isolated dry thunderstorm area was added across northeastern
Colorado with this update. While some areas of the Front Range and
High Plains have received above average rainfall in May, the plains
to the northeast saw less. Recent guidance from local partners
suggests that though some green up is occurring, underlying fuel
load is sufficiently dry to carry fire. Precipitable water values
range around 0.9-1" but isolated coverage and generally fast storm
motions will likely lead to little measurable precipitation.
Elevated highlights were also expanded to cover potential for
dry/windy conditions in the afternoon.

Critical conditions are expected across much of the Great Basin into
the Southwest Saturday afternoon. No changes were made to these
outlook areas. See previous discussion for more information.

..Thornton.. 06/05/2026

.PREV DISCUSSION... /ISSUED 0154 AM CDT Fri Jun 05 2026/

...Synopsis...
The upper trough over the Northwest is forecast to deepen and
intensify as it spread eastward into the Northern Rockies and
southern Canada Saturday. A belt of stronger mid-level flow will
move southeastward, overspreading a dry and hot air mass over much
of the western US. This will promote widespread elevated and
critical fire-weather conditions atop dry fuels from the Great basin
to the Southwest.

...Great Basin, Intermountain West and the Southwest...
As the upper trough over the Northwest/northern Rockies intensifies,
a belt of stronger flow will overspread the hot and dry surface
conditions across the Western US. The mid-level jet max will aid in
efficient mixing of strong winds to the surface. Sustained southwest
winds of 20 to 30 mph are anticipated. With continued poor overnight
recoveries, RH values in the single digits and low teens are
expected on a widespread basis. Sustained critical fire weather
conditions are expected across portions of eastern NV, southern UT,
and northern AZ.

Weaker flow aloft farther south and east will still promote
widespread elevated conditions with 10-20% RH and surface gusts of
15-20 mph. Potentially enhanced by local terrain across southern AZ
into the Four Corners, some potential for brief critical conditions
may develop given drying fuels and increasing burn period duration.

...ID and Northern Rockies...
Ascent from the upper trough will impinge on the western edge of
surface moisture moving westward into the higher terrain. This
ascent and diurnal heating could support isolated thunderstorm
development across southern and eastern ID. Likely high-based, these
fast-moving storms would have limited precipitation efficiency.
Isolated dry lightning strikes would be possible. Currently,
convection appears more likely farther northeast where moisture is
more robust.

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

$$