ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 271643

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   1143 AM CDT Sat Jun 27 2026

   Valid 271700Z - 281200Z

   ...EXTREMELY CRITICAL FIRE WEATHER AREA FOR PORTIONS OF WESTERN
   COLORADO AND EASTERN UTAH INTO THE FOUR CORNERS REGION...
   ...CRITICAL FIRE WEATHER AREA FOR EASTERN/SOUTHERN
   NEVADA...CENTRAL/SOUTHERN UTAH...WESTERN COLORADO...NORTHWESTERN NEW
   MEXICO...NORTHERN ARIZONA...AND SOUTH-CENTRAL WYOMING...

   ***Dangerous fire weather conditions are expected today across
   eastern Utah, western Colorado, and the Four Corners region.***

   ...Morning Update...
   A cold front pushed into northern UT and southwestern WY last night,
   and has become nearly stationary this morning. South of the front,
   very poor to essentially no RH recoveries occurred from
   central-southern UT into northern AZ. Current surface observations
   depict widespread critical RH values (below 15%) across the CO River
   Basin as temperatures rise. 

   As an unseasonably strong upper trough digs into the western CONUS,
   a 40-60 kt 700 mb jet will emerge downstream expanding from the AZ
   Strip to the CO West Slope. Minimal cloud cover and deep
   boundary-layer mixing will further reinforce stronger winds aloft to
   mix down to the surface. Sustained wind speeds of 25-35 mph
   (potentially up to 40 mph in terrain favored locations) will combine
   with widespread 5-15% RH values atop a receptive fuelscape,
   maintaining an Extremely Critical fire weather threat.

   Persisting hazardous fire weather conditions -- with potential
   lightning holdovers from previous days and many ongoing active
   wildfires -- will generate a dangerous long duration burning period
   (10+ hours for some locations) as poor overnight humidity recoveries
   and lingering breezy conditions will last into Day 2/Sunday.
   Additionally, a secondary cold front will push through the Great
   Basin this evening, passing through western-central UT between
   23z-03z, then stalling overnight along the western edge of the
   Colorado Plateau. RH will increase, but winds will shift to
   west/northwesterly behind the front with a few hours of strong gusts
   (25 mph or greater) before eventually calming some overnight. This
   cold front will likely impact a number of fires in southeastern NV
   into western/central UT this evening. 

   See the previous discussion for more information.

   ..Elizalde-Garcia.. 06/27/2026

   .PREV DISCUSSION... /ISSUED 0158 AM CDT Sat Jun 27 2026/

   ...Synopsis...
   ***Dangerous fire weather conditions are expected today across
   eastern Utah, western Colorado, and the Four Corners region.***

   A robust fire weather pattern will continue across portions of the
   Great Basin and Southwest today as a seasonably strong mid-level
   trough continues to dig into the western CONUS and an attendant
   mid-level jet amplifies across portions of the Great Basin.
   Continued exceptionally dry and windy conditions following
   antecedent dry thunderstorm activity will result in significant fire
   weather concerns for any new ignitions, lingering holdovers, and
   ongoing large fires across the western CONUS.

   ...Eastern Utah, western Colorado, and the Four Corners region...
   As the aforementioned mid-level jet amplifies across portions of the
   Great Basin, a corridor of stronger sustained, southwesterly surface
   winds will expand eastward from southeastern Nevada into the Upper
   Colorado River Valley. These 25-35 mph (potentially up to 40 mph in
   terrain favored locations) winds will overlap very low RH values of
   5-15% and receptive fuels (ERCs noted in the 80-95+ percentiles)
   that were exacerbated by dry/breezy conditions on Friday. Wind gusts
   of 40-50+ mph will also be possible due to deep boundary layer
   mixing coupled with the strengthening mid-level jet. This will
   promote extremely critical fire weather conditions from the Four
   Corners region northward into eastern Utah and western Colorado and
   an extended period (10+ hours of for some locations) of critical
   fire weather conditions across a broader portion of the Great Basin.
   In addition, isolated dry thunderstorm activity on Friday presents
   an additional concern for potential lightning holdovers to emerge,
   with poor overnight humidity recoveries and lingering breezy
   conditions also forecast before another day of critical fire weather
   concerns on D2/Sunday. A broader area of elevated wind/RH conditions
   is also expected today across much of the Great Basin and Southwest
   where sustained southwesterly winds of 15-25 mph overlap low RH of
   10-20%. 

   The primary change with this outlook was a northward expansion of
   the Extremely Critical highlights owing to trends within the latest
   model guidance. Brief periods of localized extremely critical
   conditions are also possible farther west into southeastern Nevada
   and portions of north-central Arizona (in the vicinity of recent
   wildfire activity); however, confidence in an extended duration of
   overlap between 30+ mph sustained winds and RH below 10% is lower
   for these locations.