ZCZC SPCFWDD38 ALL
   FNUS28 KWNS 232107

   Day 3-8 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0407 PM CDT Sat Sep 23 2023

   Valid 251200Z - 011200Z

   A deepening trough across the western US will result in
   amplification of an eastward shifting ridge across the
   central/eastern US early next week. Cooler conditions, increasing
   relative humidity, and potential for widespread wetting rainfall is
   expected across much of the Pacific Northwest. Windy and dry
   conditions will be possible across the Great Basin and Northern
   Rockies, where little to no rainfall is expected. Beyond mid-week,
   breezy conditions may continue as persistent troughing brings waves
   of stronger mid-level flow across the west.

   ...Great Basin/Northern Rockies...
   An increase in south to southwest winds is expected for D3 - Monday
   across the Great Basin in response to increasing mid-level flow
   overspreading the region. Afternoon relative humidity reductions to
   15-20 percent will overlap sustained winds 15-20 mph across northern
   Nevada, southeastward Oregon, and southwestern Idaho. Marginal fuels
   within this region will preclude the need to include Critical
   probabilities, though Elevated fire weather conditions are likely as
   further drying of fuels occurs with forecast strong winds. Lingering
   dry conditions will be possible on D4 - Tuesday, but winds will be
   much lighter mitigating the fire weather risk.

   For the extended period, models suggest continued troughing across
   the west will bring cool and wet conditions across the Pacific
   Northwest into Great Basin and the Northern Rockies. Further drying
   will be likely across the southwest, with potential for breezy
   conditions. Overall, confidence is low in where any dry/breezy
   conditions will overlap receptive fuels along with potential for
   wetting rainfall.

   ..Thornton.. 09/23/2023

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

   $$

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