Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

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   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 211613
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1113 AM CDT TUE SEP 21 2010
   
   VALID 211700Z - 221200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR GREAT BASIN AND SRN WY...
   NO CHANGES REQUIRED.
   
   ..STOPPKOTTE.. 09/21/2010
   
   .PREV DISCUSSION... /ISSUED 0208 AM CDT TUE SEP 21 2010/
   
   ...SYNOPSIS...
   FAST PROGRESSIVE FLOW REGIME WILL FEATURE AN UPPER TROUGH MOVING
   RAPIDLY INTO CA FROM THE ERN PACIFIC WHILE A MID LEVEL ANTICYCLONE
   PERSISTS OVER THE SERN U.S.  INCREASING WSWLY MID LEVEL FLOW WILL
   OVERSPREAD THE GREAT BASIN AHEAD OF THE UPPER TROUGH LEADING TO
   BREEZY CONDITIONS AND HEIGHTENED FIRE WEATHER CONCERN ACROSS A LARGE
   PART OF THE GREAT BASIN.  IN THE LOW LEVELS...A COLD FRONT WILL PUSH
   EWD ACROSS THE UPPER GREAT LAKES AND STALL OVER THE CNTRL PLAINS AND
   SERVE AS AN EWD BOUND TO THE CRITICAL AREA OVER E-CNTRL WY.  A
   SURFACE RIDGE WILL EXTEND FROM THE MID-ATLANTIC TO THE NRN GULF
   COAST STATES.
   
   ...GREAT BASIN AND SRN WY...
   00Z/21 DETERMINISTIC MODELS INDICATE THE STRONGEST H7 FLOW WILL
   LIKELY ARRIVE ACROSS NV/UT TOWARDS SUNSET...THUS MITIGATING OVERALL
   HIGHER WIND GUST POTENTIAL.  NONETHELESS...MODEL GUIDANCE APPEARS
   CONSISTENT IN SHOWING MODERATELY STRONG SUSTAINED WINDS /20-25 MPH
   WITH HIGHER GUSTS NEARING 40 MPH/ DEVELOPING LATER TODAY ACROSS THE
   GREAT BASIN AS A STRONG UPPER JET NOSES INTO THE REGION DURING THE
   DAYTIME HOURS.  AMPLE HEATING SHOULD STEEPEN LOW LEVEL LAPSE RATES
   AND BE CONDUCIVE FOR CRITICALLY LOW RH ONCE AGAIN ACROSS THE REGION
   /8-15 PERCENT/.  FARTHER E OVER S-CNTRL WY...FIRE WEATHER CONDITIONS
   WILL PROBABLY BE SLIGHTLY LESS VOLATILE THAN AREAS OF CNTRL-ERN NV
   BUT POCKETS OF CRITICAL CONDITIONS /SUSTAINED WINDS AROUND 20 MPH
   AND 10-15 PERCENT RH/ ARE EXPECTED TO OCCUR INTERMITTENTLY FOR A FEW
   HOURS.
   
   ...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 211731
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1231 PM CDT TUE SEP 21 2010
   
   VALID 221200Z - 231200Z
   
   ...NO CRITICAL AREAS...
   
   NO CHANGES REQUIRED.
   
   ..STOPPKOTTE.. 09/21/2010
   
   .PREV DISCUSSION... /ISSUED 0244 AM CDT TUE SEP 21 2010/
   
   ...SYNOPSIS...
   AN UPPER TROUGH OVER CA AT THE START OF THE PERIOD WILL QUICKLY MOVE
   EWD INTO THE GREAT BASIN WITH STRENGTHENING SWLY FLOW FIELDS AHEAD
   OF THE TROUGH OVERSPREADING THE FOUR CORNERS STATES.  DOWNSTREAM A
   FLATTENED RIDGE WILL LEAD TO TRANQUIL CONDITIONS OVER MUCH OF THE
   ERN 1/3RD OF THE U.S.  AT THE SURFACE...A STALLED FRONTAL BOUNDARY
   OVER THE CNTRL STATES WILL RETREAT NWD  AS A COLD FRONT PUSHES EWD
   OVER THE NERN STATES.  RICHER MOISTURE WILL ALREADY BE IN PLACE OVER
   SRN AZ BY DAYBREAK WEDNESDAY AND CONTINUE TO STREAM NWD INTO UT/CO
   LEADING TO SCATTERED TO NUMEROUS SHOWERS/TSTMS AS THE UPPER TROUGH
   IMPINGES UPON THE REGION.  NO LARGE SCALE CRITICAL FIRE WEATHER
   AREA/S ARE ANTICIPATED AT THIS TIME.
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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