Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic
Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast

Click for Day 1 FireWX Areal Outline Product

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 200628

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0128 AM CDT Wed Jun 20 2018

   Valid 201200Z - 211200Z

   ...Synopsis...
   A mid-level shortwave trough will be moving onshore, across northern
   California into western Nevada throughout the Day 1/Wednesday
   period. In addition, a belt of stronger mid-level flow will traverse
   the eastern portions of an upper-level ridge across the central
   parts of the Great Basin and Four Corners region.

   ...Western Nevada... 
   Stronger winds associated with the mid-level shortwave trough moving
   onshore will likely mix down to the surface aided by both a
   well-mixed boundary layer and downslope winds associated with the
   northern Sierra Mountains. With 10-15 mph surface winds and critical
   RH values overlapping recently cured fine-fuels in this area, an
   elevated delineation was maintained.

   ...Northwest New Mexico...
   A well-mixed boundary layer will also be present in northwest New
   Mexico during the Day 1/Wednesday period, allowing for modestly
   strong winds associated with a 500 mb speed max traversing the upper
   level ridge to mix down to the surface. Surface winds will likely
   reach the 10-15 mph range, with critical RH present. Given the lack
   of stronger surface winds and marginally available fuels, an
   elevated delineation was not added for this area.

   ..Squitieri/Jirak.. 06/20/2018

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

      
Day 2 Fire Weather Forecast graphic
Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast

Click for Day 2 FireWX Areal Outline Product (KWNSPFWFD2)

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 200722

   Day 2 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0222 AM CDT Wed Jun 20 2018

   Valid 211200Z - 221200Z

   ...Synopsis...
   A short-wave trough will propagate across the Great Basin as an
   upper-level ridge begins to break down during the Day 2/Thursday
   period. Stronger upper-level winds will mix down towards the surface
   via a well-mixed boundary layer during the late afternoon/evening
   hours across much of the central/southern Great Basin into the Four
   Corners area, with downslope winds also occurring along the east
   side of the northern Sierra Mountains in western Nevada.

   ...Central to Southern Great Basin...
   Widespread surface winds of at least 15 mph along with critical RH
   values will be likely across much of eastern Nevada into western
   Utah and northwestern Arizona for much of the afternoon and early
   evening hours. Given the marginal availability of fuels and brevity
   of critical winds, an elevated area was delineated, though localized
   critical conditions cannot be out ruled. 

   ...Western Nevada...
   Critical RH values will likely be present during the
   afternoon/evening hours east of the Northern Sierras. Mixing of
   downslope winds to the surface should yield sustained surface winds
   within the 10-20 mph range. Marginal availability of fine-fuels and
   short duration of critical winds support elevated fire weather
   conditions, though locally critical conditions may be possible.

   ..Squitieri/Jirak.. 06/20/2018

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

      

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