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    Day 2 FW Outlook >
Sep 2, 2015 Day 1 Fire Weather Outlook
Updated: Wed Sep 2 16:52:02 UTC 2015 (Print Version | 20150902 1700Z Day 1 FireWX shapefile | 20150902 1700Z Day 1 FireWX KML)
Day 1 Fire
 Population  Cities/Towns  CWAs  Interstates  Counties  FEMA Regions  Day 1 Surface Analysis

Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
Critical 54,387 221,253 Bozeman, MT...Elko, NV...Belgrade, MT...Livingston, MT...Laurel, MT...
   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 021647

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1147 AM CDT WED SEP 02 2015

   VALID 021700Z - 031200Z

   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SRN MT AND ERN ID...
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF CNTRL/ERN NV...

   NO CHANGES HAVE BEEN MADE TO THE ONGOING FORECAST.

   ..COHEN.. 09/02/2015

   .PREV DISCUSSION... /ISSUED 0352 AM CDT WED SEP 02 2015/

   ...SYNOPSIS...
   AMPLIFICATION OF THE UPPER AIR PATTERN IS EXPECTED TODAY AND TONIGHT
   AS AN UPPER TROUGH OVER THE PACIFIC NORTHWEST/WRN CANADA DEEPENS
   OVER THIS SAME REGION...AND DOWNSTREAM RIDGING OVER THE PLAINS/UPPER
   MIDWEST BUILDS NWD THROUGH EARLY THU. ENHANCED MID-LEVEL WINDS
   ASSOCIATED WITH THE PACIFIC NORTHWEST UPPER TROUGH SHOULD EXPAND
   SLOWLY EWD OVER PORTIONS OF THE NRN ROCKIES AND GREAT BASIN BY THIS
   EVENING. A SFC COLD FRONT ANALYZED OVER ERN WA/ORE EARLY THIS
   MORNING SHOULD BECOME ALMOST STATIONARY LATER TODAY ACROSS SERN
   ORE...NWRN NV...AND CNTRL ID AS THIS FEATURE BECOMES NEARLY PARALLEL
   WITH SWLY WINDS ALOFT.

   ...MUCH OF THE GREAT BASIN AND PORTIONS OF THE NRN/CNTRL ROCKIES...
   UNDER BROAD SWLY MID-LEVEL FLOW ALOFT...ELEVATED TO CRITICAL FIRE
   WEATHER CONDITIONS ARE EXPECTED TODAY FOR MUCH OF THE GREAT BASIN
   AND PORTIONS OF THE NRN/CNTRL ROCKIES. MID-LEVEL WINDS ARE EXPECTED
   TO INCREASE THROUGH THE PERIOD AS THE UPPER TROUGH DESCRIBED ABOVE
   APPROACHES THIS REGION FROM THE NW. AS DIURNAL HEATING ENSUES LATER
   TODAY...SFC WINDS SHOULD LIKEWISE INCREASE AS THE BOUNDARY LAYER
   WARMS/MIXES. RH VALUES SHOULD FALL NEAR TO OR BELOW CRITICAL VALUES
   THIS AFTERNOON AND EVENING ACROSS MUCH OF THE ONGOING ELEVATED FIRE
   WEATHER AREA...WHICH HAS BEEN MAINTAINED WITH ONLY MINOR
   MODIFICATIONS.

   THE NRN CRITICAL AREA ACROSS PORTIONS OF SRN MT AND ERN ID HAS BEEN
   EXPANDED SLIGHTLY BASED ON LATEST SHORT-TERM MODEL GUIDANCE...
   INCLUDING RAP/GFS FORECAST SOUNDINGS. ACROSS THIS REGION...
   SUSTAINED WINDS OF 20-25 MPH...WITH HIGHER GUSTS LIKELY...WILL
   COMBINE WITH RH VALUES GENERALLY BETWEEN 10-20 PERCENT AND DRY FUELS
   TO CREATE CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON AND
   EVENING. THE SRN CRITICAL AREA ACROSS PORTIONS OF CNTRL NV HAS BEEN
   EXPANDED NEWD INTO PORTIONS OF ERN NV...WHERE CONFIDENCE HAS
   INCREASED IN SUSTAINED WINDS EXCEEDING 20 MPH FOR MORE THAN THREE
   HOURS THIS AFTERNOON. ACROSS MUCH OF WY...WIDESPREAD ELEVATED TO
   LOCALLY CRITICAL CONDITIONS SHOULD OCCUR TODAY...BUT CONFIDENCE IN
   FORECAST WINDS ABOVE 20 MPH ON MORE THAN A BRIEF/ISOLATED BASIS
   PRECLUDES A CRITICAL DESIGNATION WITH THIS OUTLOOK.

   ...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 02, 2015
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