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 060730
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0230 AM CDT SUN SEP 06 2009
   
   VALID 061200Z - 071200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   AN UPPER LEVEL TROUGH IS FORECAST TO ENTER THE PAC NW ON
   SUNDAY...AND WILL BE ACCOMPANIED BY INCREASING WIND SPEEDS ALOFT AND
   A COLD FRONT ADVANCING EWD ACROSS THE NRN ROCKIES AND INTO THE NRN
   HIGH PLAINS. NEAR CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE
   OVER SRN/ERN MT AND NRN WY AS GUSTY WINDS DEVELOP AHEAD OF THE FRONT
   AND A WARM/DRY LOW LEVEL AIRMASS DEVELOPS. STRENGTHENING WINDS ALOFT
   WILL ALSO SPREAD E ACROSS PORTIONS OF THE GREAT BASIN...AND MAY LEAD
   TO A PERIOD OF ELEVATED FIRE WEATHER CONDITIONS OVER ERN NV/WRN UT.
   
   ...SRN/ERN MT AND NRN WY...
   DEEP BOUNDARY LAYER MIXING IS INDICATED IN MODEL FORECAST SOUNDINGS
   ACROSS MUCH OF SRN/ERN MT INTO NRN WY BY SUNDAY AFTERNOON. AS LOW
   LEVEL LAPSE RATES STEEPEN AND A WEAK UPPER LEVEL IMPULSE MOVES E
   ACROSS THE REGION...GUSTY WINDS UP TO 30 MPH ARE EXPECTED WITH
   SUSTAINED WIND SPEEDS NEAR 20 MPH. THE GUSTY WINDS WILL COMBINE WITH
   AFTERNOON RH VALUES NEAR 20 PERCENT...RESULTING IN MARGINAL CRITICAL
   FIRE WEATHER CONDITIONS. FORECAST SOUNDINGS ALSO INDICATE INVERTED-V
   THERMODYNAMIC PROFILES WITH SUFFICIENT INSTABILITY FOR HIGH BASED
   THUNDERSTORM DEVELOPMENT. DUE TO THE LOW THUNDERSTORM COVERAGE
   CURRENTLY ANTICIPATED...A CRITICAL AREA WILL NOT BE ASSIGNED FOR
   THIS SCENARIO...ALTHOUGH ISOLATED FIRE STARTS WILL CERTAINTY BE A
   POSSIBILITY DUE TO LIGHTNING STRIKES. DURING THE OVERNIGHT
   PERIOD...A STRONG COLD FRONT WILL MOVE E ACROSS THE AREA...WITH
   WINDS SHIFTING TO WNWLY AND POSSIBLY INCREASING IN SPEED ABRUPTLY.
   ALTHOUGH RH VALUES ARE EXPECTED TO RECOVER WITHIN THE POST FRONTAL
   AIRMASS...ANY ONGOING FIRES COULD BEHAVE ERRATICALLY WITH THE
   FRONTAL PASSAGE.
   
   ...ERN NV AND WRN UT...
   PORTIONS OF ERN NV AND WRN UT WILL RESIDE ALONG THE SRN FRINGE OF A
   STRONG UPPER LEVEL JET POSITIONED OVER THE PAC NW. AS A
   RESULT...GUSTY WINDS /POSSIBLY AS HIGH AS 30 MPH/ WILL BE POSSIBLE
   AS LOW LEVEL LAPSE RATES STEEPEN WITH DAYTIME HEATING. RH VALUES
   WILL LIKELY FALL BELOW 20 PERCENT AS WELL...LEADING TO ELEVATED FIRE
   WEATHER CONDITIONS ACROSS THE REGION.
   
   ..GARNER.. 09/06/2009
   
   ...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 060731
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0231 AM CDT SUN SEP 06 2009
   
   VALID 071200Z - 081200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A SHORTWAVE TROUGH IS FORECAST TO EJECT ENEWD ACROSS THE FAR
   NWRN/N-CENTRAL CONUS ON MONDAY. MEANWHILE...AN ASSOCIATED SURFACE
   COLD FRONT WILL BECOME POSITIONED FROM THE NRN PLAINS SWWD INTO THE
   GREAT BASIN OF UT. AS THE COLD FRONT SAGS SWD...A WARM/DRY LOW LEVEL
   AIRMASS WILL BE SHUNTED AWAY FROM THE MORE ENERGETIC NRN FLOW
   REGIME...RESULTING IN A LOW PROBABILITY FOR CRITICAL FIRE WEATHER
   CONDITIONS.
   
   ..GARNER.. 09/06/2009
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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