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    Day 2 FW Outlook >
Sep 15, 2019 Day 1 Fire Weather Outlook
Updated: Sun Sep 15 06:13:02 UTC 2019 (Print Version | 20190915 1200Z Day 1 FireWX shapefile | 20190915 1200Z 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 82,308 776,052 Reno, NV...Sparks, NV...Carson City, NV...Sun Valley, NV...South Lake Tahoe, CA...
   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 150612

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0112 AM CDT Sun Sep 15 2019

   Valid 151200Z - 161200Z

   ...CRITICAL FIRE WEATHER AREA FOR NORTHWEST NV...NORTHEAST
   CA...SOUTHEAST OR...SOUTHWEST ID...
   ...CRITICAL FIRE WEATHER AREA FOR CENTRAL/EASTERN NV...

   ...Synopsis...
   A vigorous upper trough is forecast to amplify and shift eastward
   across the Pacific Coast into the Great Basin/interior Northwest by
   Monday morning. At the surface, low pressure will deepen from the
   northern Great Basin into portions of the northern High Plains, with
   a surface trough extending southward into the central/southern High
   Plains. 

   ...Great Basin and vicinity...
   As low/midlevel flow increases in advance of the strong upper
   trough, a broad area of elevated to potentially critical fire
   weather conditions is forecast to develop from the Great Basin and
   vicinity eastward into portions of southern WY. High-end critical
   conditions are likely over northwest NV and adjacent portions of
   northeast CA, southeast OR, and far southwest ID. In this area,
   sustained winds of 20-30 mph will combine with minimum RH values of
   8-15%, with localized areas of extremely critical conditions
   possible. Another area of critical conditions is forecast over
   portions of central/eastern NV, where sustained winds of 15-25 mph
   are forecast in conjunction with minimum RH values of 10-15%. Poor
   overnight RH recovery is expected across both critical areas, and
   critical conditions may persist through late tonight in some areas. 

   Elsewhere, critically low RH is expected over the remainder of the
   elevated area, though slightly weaker winds and/or less receptive
   fuels preclude any critical upgrade for those regions. Elevated to
   locally critical wind/RH will also likely develop across portions of
   eastern ID into southwest MT, but fuels are currently expected to be
   mostly unreceptive, so no delineation was included for that area.

   ..Dean.. 09/15/2019

   ...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: September 15, 2019
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