Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

Click for Day 1 FireWX Areal Outline Product

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 201629
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1129 AM CDT FRI AUG 20 2010
   
   VALID 201700Z - 211200Z
   
   ...NO CRITICAL AREAS...
   
   ...GREAT BASIN INTO WYOMING...
   DRY AND BREEZY CONDITIONS WILL AFFECT MUCH OF THE GREAT BASIN INTO
   WYOMING TODAY AS A SFC LOW DEVELOPS/STRENGTHENS OVER NEVADA IN
   RESPONSE TO SHORTWAVE UPPER LEVEL RIDGING AHEAD OF APPROACHING PAC
   NW TROF. SFC SUSTAINED WIND SPEEDS WILL GENERALLY REMAIN AOB 15 MPH
   BUT LOCALIZED AREAS OF TERRAIN ENHANCED GUSTS TO 20-30 MPH MAY BE
   POSSIBLE AT TIMES /SEE KCPR AND KRWL 15Z AND 16Z OBS/. AFTERNOON RH
   VALUES WILL RANGE FROM THE SINGLE DIGITS OVER PORTIONS OF THE GREAT
   BASIN TO THE TEENS OVER UTAH AND WYOMING. 
   
   NO CRITICAL AREAS ARE EXPECTED TODAY.
   
   ..STOPPKOTTE.. 08/20/2010
   
   .PREV DISCUSSION... /ISSUED 0354 AM CDT FRI AUG 20 2010/
   
   ...SYNOPSIS...
   A STRONG UPPER-LEVEL TROUGH WILL DEVELOP ALONG THE PACIFIC COAST
   THROUGH THE PERIOD LEADING TO INCREASED MID- AND UPPER-LEVEL SWLY
   FLOW OVER THE NWRN CONUS BY SATURDAY MORNING.  IN RESPONSE TO THE
   UPPER-LEVEL FLOW...SURFACE LOW PRESSURE WILL DEVELOP OVER THE NRN
   INTERMOUNTAIN WEST...THOUGH INCREASED FLOW AT THE SURFACE LIKELY
   WILL NOT BE REALIZED UNTIL SATURDAY AFTERNOON.  IN THE SOUTHWEST AND
   EAST OF THE ROCKIES...SUFFICIENT LOW-LEVEL MOISTURE AND/OR LIGHT
   WINDS WILL LIMIT THE FIRE THREAT.
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      
Day 2 Fire Weather Forecast graphic

Click for Day 2 FireWX Areal Outline Product

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 201902
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0202 PM CDT FRI AUG 20 2010
   
   VALID 211200Z - 221200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR NERN CA...SERN ORE...NV...WRN
   UT...SRN ID...SW MT...
   
   ...NERN CA...SERN ORE...MOST OF NV...FAR NWRN UT...SRN ID...SWRN
   MT...
   EXPANDED CRITICAL AREA AND JOIN THE NORTH AND SOUTH AREAS INTO ONE
   AREA. GUSTY WINDS WILL BE WIDESPREAD SATURDAY WITH SUSTAINED WINDS
   20-25 MPH WITH HIGHER GUSTS FROM THE ERN SLOPES OF THE SIERRAS INTO
   SERN ORE EWD ACROSS MUCH OF NV INTO ERN ID AND SWRN MT. WHILE FUEL
   CONDITIONS MAY BE SOMEWHAT MARGINAL IN SOME LOCATIONS /HIGHER
   ELEVATIONS ESPECIALLY/...VERY DRY CONDITIONS WITH RH VALUES FROM THE
   SINGLE DIGITS TO THE TEENS AND DAYTIME TEMPERATURES IN THE 80S AND
   90S...WILL COMBINE WITH STRONG WINDS TO CREATE CRITICAL FIRE WEATHER
   CONDITIONS. THE MAIN AREAS FOR CONCERN WILL BE THOSE THAT HAVE SEEN
   RECENT DRY THUNDERSTORMS/LIGHTNING STRIKES AS WELL AS ONGOING/RECENT
   FIRE ACTIVITY. SOME FORECAST MODELS INDICATE THAT VERY ISOLATED DRY
   THUNDERSTORMS WILL BE POSSIBLE OVER SWRN MT NEAR THE ID/WY BORDER AS
   WELL. 
   
   ...WRN WA...NWRN ORE...NRN ID...NWRN MT...
   WINDY CONDITIONS WILL DEVELOP AS UPPER TROF MOVES ONSHORE AND A COLD
   FRONT BEGINS TO MOVE SEWD FROM WRN WA/ORE. TEMPERATURES WILL NOT BE
   AS WARM AS THOSE FURTHER S AND E WITH HIGHS MAINLY IN THE 70S AND
   80S...BUT RH VALUES WILL FALL INTO THE 15-25 PERCENT RANGE.
   PERSISTENT DRY CONDITIONS COMBINED WITH MARGINAL FIRE WEATHER
   CONDITIONS SHOULD PRIMARILY BE A CONCERN OVER AREAS WITH ONGOING
   FIRES AND/OR RECENT DRY LIGHTNING STRIKES.
   
   ..STOPPKOTTE.. 08/20/2010
   
   .PREV DISCUSSION... /ISSUED 0411 AM CDT FRI AUG 20 2010/
   
   ...SYNOPSIS...
   AN UPPER-LEVEL TROUGH WILL MOVE ONSHORE IN THE PACIFIC NORTHWEST ON
   SATURDAY WITH VERY STRONG WINDS ACCOMPANYING THE SYSTEM.  AT THE
   SURFACE...A LOW PRESSURE SYSTEM WILL STRENGTHEN OVER THE NRN
   INTERMOUNTAIN WEST AND MOVE/DEVELOP NEWD INTO THE NRN ROCKIES.
   ELSEWHERE...ABUNDANT LOW-LEVEL MOISTURE AND/OR LIGHT WINDS WILL
   PREDOMINATE...LIMITING THE FIRE WEATHER THREAT.
   
   ...NERN CA...SERN ORE...NRN/CNTRL NV...
   MID-LEVEL SWLY FLOW WILL INCREASE TO AOA 50 MPH OVER THIS REGION IN
   RESPONSE TO THE APPROACHING TROUGH.  AS THE BOUNDARY LAYER DEEPENS
   INTO THE AFTERNOON...SUSTAINED SURFACE WINDS OVER 20 MPH WILL
   DEVELOP.  WITH A DRY AIRMASS IN PLACE...RH VALUES WILL FALL TO 10
   PERCENT AS TEMPERATURES CLIMB INTO THE LOW-TO-MID 90S BY
   AFTERNOON...LEADING TO CRITICAL FIRE WEATHER CONDITIONS.
   
   ...SERN ID...SWRN MT...
   STRONG MID-LEVEL SWLY FLOW WILL MIX DOWN TO LOW LEVELS BY AFTERNOON
   LEADING TO SUSTAINED SURFACE WINDS OVER 20 MPH.  AS DAYTIME HEATING
   OCCURS...RH VALUES SHOULD FALL BELOW 15 PERCENT LEADING TO CRITICAL
   FIRE WEATHER CONDITIONS.  IN ADDITION...THERE MAY BE SOME THREAT OF
   ISOLATED DRY TSTMS OVER SWRN MT WITH THE DEVELOPMENT OF HIGH-BASED
   STORMS.
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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