ZCZC SPCFWDD38 ALL
   FNUS28 KWNS 182120

   Day 3-8 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0420 PM CDT Wed Apr 18 2018

   Valid 201200Z - 261200Z

   A closed upper low will move eastward from the Four Corners region
   to the southern/central High Plains on Day 3/Friday, and it should
   continue towards the lower/mid MS Valley on Day 4/Saturday. At the
   surface, low-level moisture should increase east of a dryline/front
   across the southern High Plains on Day 3/Friday. A progressive
   pattern is forecast across the CONUS from Day 5/Sunday through the
   remainder of the extended forecast period. Considerable uncertainty
   exists regarding the possible development and subsequent evolution
   of an upper trough/low over the western CONUS around Day 7/Tuesday
   into Day 8/Wednesday.

   ...Day 3/Friday - Day 4/Saturday: Portions of the Southwest into the
   Southern Plains...
   Although some precipitation may occur across portions of the
   Southwest into southern High Plains from Day 2/Thursday into Day
   3/Friday, there still appears to be enough potential for fuels to
   remain dry/receptive to continue the 70%/critical area for Day
   3/Friday for parts of NM into far west TX with no changes. Across
   this area, strong/gusty westerly downslope winds behind a
   dryline/front will likely combine with critically reduced RH values
   to support critical fire weather conditions.

   A 40%/marginal area has been maintained for Day 4/Saturday across
   the TX Big Bend and Edwards Plateau vicinity. Post-frontal
   west-northwesterly winds should become locally strong/gusty Saturday
   afternoon, and RH values are forecast to become critically reduced
   across this region. Confidence in even stronger low-level winds
   currently remains too low to justify higher (70%) probabilities for
   critical fire weather conditions.

   ..Gleason.. 04/18/2018

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

   $$

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