ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 100602

   Day 2 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0102 AM CDT Thu Sep 10 2026

   Valid 111200Z - 121200Z

   ...Synopsis...
   A pronounced prefrontal trough/low develops ahead of a southward
   surging cold front across the Northern Plains on D2/Friday while an
   upper trough pushes farther southward into the Northwest CONUS.
   Enhanced westerly winds and downslope drying amid receptive fuels
   will promote elevated fire weather concerns for portions of the
   northern Plains Friday.

   ...Southeastern WY, southwestern South Dakota and northwestern
   Nebraska...
   Deep layer westerly flow accelerates across the northern High Plains
   through D1/Thursday night in response to the southward progressing
   mid/upper wave and deepening surface low across SD. The increasing
   westerly winds and cloud cover should limit boundary layer
   decoupling through D2/Friday morning across portions of the
   northern/central High Plains, where RH recoveries of 25% or less are
   most likely from given latest probabilistic guidance. West winds of
   15-20 mph and afternoon RH reductions in the 10-15% range south of
   an advancing cold front will bring elevated fire weather threat to
   portions of southeastern WY, southwestern SD and northwestern NE
   amid a receptive fuelscape.

   ..Williams.. 09/10/2026

      

   ZCZC SPCFWDD38 ALL
   FNUS28 KWNS 092140

   Day 3-8 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0440 PM CDT Wed Sep 09 2026

   Valid 111200Z - 171200Z

   ...Synopsis...
   A decaying mid-level trough will enhance zonal flow over the
   northern U.S. as a strong cold front navigates the north-central
   states, promoting fire weather concerns where fuels remain receptive
   on Day 3/Friday. An upper-level low will enter the Pacific Northwest
   and Northern Rockies this weekend with an accompanying 60-70 kt jet
   over the Great Basin. This pattern may provide broader precipitation
   chances and much cooler temperatures to the northwestern CONUS, thus
   subduing fire weather concerns; however, strong southwesterly winds
   amid critically low RH values may support a broader fire weather
   threat in the Great Basin. As troughing departs and enters the Upper
   Midwest and Great Lakes region early next week, a very dry and much
   cooler airmass will reside over the western CONUS. Simultaneously,
   ridging is forecast to build across the Southeast favoring drier
   conditions and above-normal temperatures. 

   ...Day 3/Friday - Northern High Plains...
   Poor overnight humidity recoveries are expected across eastern WY,
   western SD, and the NE Panhandle leading into Day 3/Friday. As a
   result, RH values will quickly decline to 10-20% as winds accelerate
   ahead of an advancing cold front. Sustained westerly winds may
   approach 25 mph across the terrain-favored plains, then shift to
   northerly as the front passes. Notably, guidance indicates a 50-80%
   probability of wind gusts exceeding 35 mph through the afternoon.
   40% Critical probabilities have been maintained across southeastern
   WY, northwestern NE Panhandle, and southwestern SD to account for
   this threat.

   ...Day 4/Saturday - Northeastern California and Great Basin...
   A robust upper low will impinge upon the northwestern U.S. on Day
   4/Saturday, amplifying west-southwesterly flow over northern CA and
   the western Great Basin. Ensemble guidance depicts expansive 75-90%
   probabilities of wind speeds exceeding 25 mph (50-80% chance of
   sustained winds exceeding 30 mph) amid critically low RH in
   northeastern CA and northern NV. Despite modest ERCs,
   drought-stressed fuels could support new ignitions given the
   severity of meteorological conditions. As a result, 40% Critical
   probabilities were introduced across the region.

   ..Elizalde-Garcia.. 09/09/2026