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 131629
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1129 AM CDT TUE JUL 13 2010
   
   VALID 131700Z - 141200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR MUCH OF WY...
   
   FORECAST ON TRACK...NO APPRECIABLE CHANGES NEEDED.
   
   ..SMITH.. 07/13/2010
   
   .PREV DISCUSSION... /ISSUED 0236 AM CDT TUE JUL 13 2010/
   
   ...SYNOPSIS...
   WINDS WILL INCREASE ACROSS THE NRN ROCKIES/NRN HIGH PLAINS AS A
   VIGOROUS UPPER TROUGH MOVES ACROSS CANADA...RESULTING IN CRITICAL
   FIRE WEATHER CONDITIONS OVER MUCH OF WY DUE TO STRONG WINDS AND LOW
   RH. A SFC TROUGH WILL BECOME SITUATED ACROSS THE NRN/CNTRL HIGH
   PLAINS WITH AN ATTENDANT COLD FRONT EXTENDING INTO THE CNTRL GREAT
   BASIN. A SUBTROPICAL UPPER RIDGE WILL AGGRANDIZE AND BECOME CENTERED
   OVER THE S CNTRL CONUS IN THE WAKE OF A SHORTWAVE UPPER TROUGH
   MOVING TOWARDS THE MID-ATLANTIC REGION.
   
   ...MUCH OF WY...
   A VERY STRONG MID-LEVEL JET /SAMPLED AT AROUND 70 KTS AT 500 MB PER
   00Z UIL/OTX RAOBS/ ASSOCIATED WITH A CANADIAN UPPER LOW WILL SHIFT
   EWD INTO MT AND NRN WY. A SFC COLD FRONT WILL PROGRESS TOWARDS THE
   SE AS A SFC LOW/TROUGH BECOMES CENTERED OVER ERN WY. AHEAD OF THIS
   FEATURE...THE BOUNDARY LAYER WILL BECOME VERY WELL-MIXED AS
   TEMPERATURES HEAT INTO THE 80S/90S ACROSS THE LOWER ELEVATION
   BASINS...ALLOWING FOR AFTERNOON RH VALUES IN THE LOWER TO MID TEENS
   TO DEVELOP. AS STRONGER WINDS BEGIN TO MIX DOWN TO THE SFC AND THE
   PRESSURE GRADIENT INCREASES...SUSTAINED WLY WINDS OF 20-25/GUSTS
   35-45 MPH APPEAR LIKELY TO DEVELOP...RESULTING IN CRITICAL FIRE
   WEATHER CONDITIONS ACROSS MUCH OF WY.
   
   ...NRN NV...SWRN ID...
   MODERATELY STRONG MID-LEVEL FLOW WILL REMAIN POSITIONED ACROSS THE
   REGION AS THE BASE OF A CANADIAN UPPER TROUGH PASSES TO THE N.
   SUSTAINED WNWLY OF 15-20 MPH WILL DEVELOP AS A DRY COLD FRONT MOVES
   SWD AND A WEAK SFC LOW DEEPENS OVER SWRN UT. NEAR CRITICAL TO
   LOCALLY CRITICAL CONDITIONS MAY OCCASIONALLY BE
   OBSERVED...PARTICULARLY OVER NRN NV...BUT THE COMBINATION OF
   MARGINALLY LOW RH AND SUSTAINED WIND SPEEDS GENERALLY UNDER 20 MPH
   WILL PRECLUDE A MORE SIGNIFICANT FIRE WEATHER THREAT FROM
   DEVELOPING.
   
   ...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 131832
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0132 PM CDT TUE JUL 13 2010
   
   VALID 141200Z - 151200Z
   
   ...NO CRITICAL AREAS...
   
   FORECAST ON TRACK...NO CHANGES NEEDED.
   
   ..SMITH.. 07/13/2010
   
   .PREV DISCUSSION... /ISSUED 0338 AM CDT TUE JUL 13 2010/
   
   ...SYNOPSIS...
   A POWERFUL CANADIAN UPPER LOW WILL CONTINUE TO PROGRESS EWD INTO
   MANITOBA...AS A TRAILING SHORTWAVE UPPER TROUGH MOVES THROUGH THE
   INTER-MOUNTAIN WEST. A BELT OF STRONG MID-LEVEL FLOW WILL EXTEND
   FROM NRN UT INTO THE NRN PLAINS...RESULTING IN WINDY CONDITIONS
   ACROSS PORTIONS OF WY AND MT/ND. AN EXPANSIVE SUB-TROPICAL UPPER
   RIDGE WILL BECOME CENTERED OVER THE SRN PLAINS...YIELDING HOT
   TEMPERATURES ACROSS MUCH OF THE SRN HALF OF THE NATION. THE
   POTENTIAL FOR THUNDERSTORMS WILL EXIST FROM THE DESERT SOUTHWEST AND
   CNTRL PLAINS INTO THE UPPER MIDWEST...AND OVER THE ERN CONUS.
   
   ...S CNTRL WY...
   A BELT OF STRONG MID-LEVEL FLOW /50-60 KTS AT 500 MB/ EXTENDING FROM
   THE BASE OF THE CANADIAN UPPER LOW WILL REMAIN POSITIONED OVER
   WY...AS A SHORTWAVE UPPER TROUGH SHIFTS EWD ACROSS THE REGION. WITH
   SFC HIGH PRESSURE BUILDING OVER THE PAC NW...AND THE BOUNDARY LAYER
   BECOMING WELL-MIXED IN THE AFTERNOON...WLY WINDS OF AROUND 15-20 MPH
   /GUSTS AS HIGH AS 40 MPH/ WILL DEVELOP ACROSS THE RED DESERT AND
   BASIN FLOORS OF S CNTRL WY. DESPITE SOME COOLING IN THE BOUNDARY
   LAYER COMPARED TO THE PREVIOUS DAY...THE AIR MASS WILL REMAIN
   SUFFICIENTLY DRY TO YIELD MIN RH VALUES IN THE LOWER TO MID TEENS.
   SUSTAINED WIND SPEEDS ARE EXPECTED TO REMAIN JUST BELOW CRITICAL
   THRESHOLDS AT MANY LOCATIONS ACROSS S CNTRL WY...BUT LOCALIZED
   CRITICAL CONDITIONS MAY STILL EXIST.
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

Fire Weather/Forecast Products/Home