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    Day 2 FW Outlook >
Aug 25, 2019 Day 1 Fire Weather Outlook
Updated: Sun Aug 25 15:32:02 UTC 2019 (Print Version | 20190825 1700Z Day 1 FireWX shapefile | 20190825 1700Z Day 1 FireWX KML)
Day 1 Fire
 Pop.  Cities  CWAs  RFCs  Interstates  Counties  ARTCC  FEMA Regions  Day 1 Surface Analysis

Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
Critical 95,669 814,853 Idaho Falls, ID...Pocatello, ID...Logan, UT...Twin Falls, ID...Laramie, WY...
   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 251531

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   1031 AM CDT Sun Aug 25 2019

   Valid 251700Z - 261200Z

   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF NORTHEAST
   NEVADA...SOUTHERN IDAHO...NORTHERN UTAH...SOUTHERN
   WYOMING...NORTHWEST COLORADO...

   The critical areas were joined and minor modifications were made
   elsewhere based on latest guidance and observations. The forecast
   remains on track, and please see the discussion below for more
   details.

   ..Nauslar.. 08/25/2019

   .PREV DISCUSSION... /ISSUED 0109 AM CDT Sun Aug 25 2019/

   ...Synopsis...
   A strong mid-level jet will push into the central Rockies today, on
   the back side of a broad upper-level trough along the Canadian
   border. At the surface, a cold front will move across the
   Intermountain West. Boundary-layer mixing of stronger flow aloft
   along with a more stout surface pressure gradient than recent days
   will lead to critical fire weather conditions across portions of
   both the northern Great Basin and central Rockies. Winds of 20-25
   mph will be common across the highlighted critical area. Potential
   for 25+ mph sustained winds, and higher gusts, will be maximized
   underneath the mid-level jet core in the Snake River Valley and
   southern Wyoming. Elevated conditions will occur surrounding the
   critical area as winds in these locations will either be lighter
   (15-20 mph) and/or fuels will be slightly less receptive to fire
   spread. All areas that have been highlighted can expect 10-15% RH
   during the afternoon. Only minor changes have been made from the
   previous forecast on account of the latest guidance. The critical
   area in northeast Nevada was expanded slightly westward and the
   elevated area was expanded to include more of central Colorado.

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

   CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)
      
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Page last modified: August 25, 2019
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