ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 191528

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0928 AM CST Fri Dec 19 2025

   Valid 191700Z - 201200Z

   ...EXTREMELY CRITICAL FIRE WEATHER AREA FOR FOR PORTIONS OF THE
   COLORADO FRONT RANGE FOOTHILLS AND FAR SOUTHEAST WYOMING...
   ...CRITICAL FIRE WEATHER AREA FOR ALONG/EAST OF THE COLORADO ROCKIES
   INTO NEBRASKA PANHANDLE...

   The Critical area was expanded south along the Colorado Rockies with
   a slight expansion of the Elevated in portions of central Colorado
   and southwest Texas based on the latest observations and
   high-resolution forecast guidance. Westerly wind gusts of 40-70 mph
   with RH of 15-30% are already being observed in southeast Wyoming,
   along portions of the Front Range, and into the western Nebraska
   Panhandle. Cloud cover is over much of the southern/central High
   Plains, and partly to mostly cloudy conditions are likely to
   continue today. However, given the strong background flow and dry
   airmass, elevated to locally critical conditions remain expected
   across much of the southern/central High Plains, with critical to
   extremely critical conditions along/east the Front Range into
   southeast Wyoming and the western Nebraska Panhandle. This includes
   wind gusts up to 100 mph and minimum RH around 10%. A Particularly
   Dangerous Situation (PDS) Red Flag Warning has been issued by the
   NWS Boulder Weather Forecast Office for along/west of the Highway 93
   corridor into the foothills from near Golden, CO extending north to
   near Lyons, CO.

   ..Nauslar.. 12/19/2025

   .PREV DISCUSSION... /ISSUED 0121 AM CST Fri Dec 19 2025/

   ...Synopsis...
   A pronounced mid-level trough will eject into the Atlantic while a
   low-amplitude upper trough impinges on the central/northern Rockies
   into the northern Plains today. 50-70 kt 700-500 mb
   west-northwesterly flow will accompany the central CONUS upper
   trough, and overspread a deep and dry boundary layer through the
   day. The combination of dry downslope flow and surface lee troughing
   will support widespread 15+ mph sustained westerly surface winds
   amid 15-25 percent RH across much of the central and southern High
   Plains into the southern Plains for much of the afternoon,
   warranting Elevated highlights. 

   Critical fire weather highlights are in place across portions of
   central CO into southeastern WY and the NE Panhandle. Here the
   strongest mid-level flow will overspread a boundary layer extending
   to over 500 mb, which should support efficient downward momentum
   transport to the surface. Sustained surface winds should exceed 20
   mph (perhaps 30 mph in some spots) amid 15-20 percent RH. Of
   particular concern is the immediate foothills across north-central
   CO toward the Cheyenne WY area, where channeled flow within complex
   terrain may support 50 mph sustained winds in localized spots, with
   gusts up to 90 mph possible. Given dry fuels and 10-20 percent RH
   along the foothills, a volatile environment may develop and support
   rapid wildfire spread/extreme fire behavior for any potential
   ignitions in the area, warranting Extremely Critical highlights.

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

   CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)