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   FNUS21 KWNS 201557

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   1057 AM CDT Sun Sep 20 2020

   Valid 201700Z - 211200Z

   ...NO CRITICAL AREAS...

   The previous forecast remains on track with pockets of elevated
   conditions possible for southeast WY this afternoon as winds
   increase into the 15-20 mph range. However, a cool post-frontal air
   mass will likely maintain RH values at or above 20% for most
   locations today. Further to the southwest in the Great Basin,
   localized elevated conditions will be possible for portions of
   southern NV/southeast CA where terrain-induced winds up to 15-20 mph
   may overlap with RH reductions below 15%.

   ..Moore.. 09/20/2020

   .PREV DISCUSSION... /ISSUED 1213 AM CDT Sun Sep 20 2020/

   ...Synopsis...
   The upper-level trough in the northern Rockies will continue
   northeastward and weaken today. Mid-level flow across the U.S. will
   remain moderate only in a few locations. A cold front will stall in
   the southern and eastern Great Basin with the eastern portion of
   this boundary moving near the upper Missouri Valley. The High Plains
   lee trough will also weaken during the day. Post-frontal downslope
   winds within southeastern Wyoming may be enhanced by remnant
   mid-level flow in the wake of the passing trough. This would be the
   most likely area for locally elevated conditions. Duration and
   spatial extent are uncertain enough that no highlights will be
   added. Elsewhere in the country, fire weather concerns appear low.

   

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