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 250804
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0304 AM CDT FRI SEP 25 2009
   
   VALID 251200Z - 261200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A CLOSED UPPER-LEVEL LOW OVER THE CNTRL PLAINS WILL GRADUALLY
   ACCELERATE EWD AS A VIGOROUS UPPER-LEVEL JET SHIFTS FROM THE NERN
   PACIFIC ACROSS SWRN CANADA. A MID-LEVEL RIDGE AXIS WILL REMAIN
   ANCHORED OVER NRN CA INTO THE NWRN GREAT BASIN.
   
   ...SRN CA COASTAL MTNS N OF THE LOS ANGELES BASIN...
   MODEST MID-LEVEL ELYS TO THE S OF NRN CA RIDGE AXIS WILL MAINTAIN
   WEAK OFFSHORE FLOW IN THE LOW-LEVELS ACROSS THE TRANSVERSE RANGES N
   OF THE LOS ANGELES BASIN. WITH POOR OVERNIGHT RH RECOVERY...A LONG
   DURATION OF CRITICALLY LOW RH WILL PERSIST AMIDST A DEEPLY MIXED
   BOUNDARY LAYER DURING THE AFTERNOON TO EARLY EVENING. MIN RH VALUES
   WILL FALL TO BETWEEN 4 AND 8 PERCENT.
   
   ..GRAMS.. 09/25/2009
   
   ...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 250927
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0427 AM CDT FRI SEP 25 2009
   
   VALID 261200Z - 271200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR CNTRL/ERN MT...
   
   ...SYNOPSIS...
   AN INTENSE UPPER-LEVEL JET /250 MB WINDS AOA 150 MPH/ WILL BECOME
   CENTERED FROM THE NRN PLAINS TO THE CANADIAN ROCKIES BY EARLY SUN.
   AN ASSOCIATED SHORT WAVE TROUGH WILL AMPLIFY SEWD ACROSS THE
   CANADIAN PRAIRIES. AN ATTENDANT SURFACE COLD FRONT WILL REACH THE
   FAR NRN HIGH PLAINS BY EARLY EVENING SAT...ACCELERATING SEWD DURING
   THE LATTER HALF OF THE PERIOD.
   
   ...CRITICAL FIRE WEATHER AREA - CNTRL/ERN MT...
   
   PRIMARY CONDITIONS: STRONG WINDS / LOW RH / RECENT DRYNESS
   
   LOW/MID-LEVEL WLYS WILL STRENGTHEN MARKEDLY THROUGH THE DAY AS AN
   INTENSE UPPER-LEVEL JET GRADUALLY OVERSPREADS THE AREA. A WELL-MIXED
   BOUNDARY LAYER WILL SUPPORT SUSTAINED SURFACE WINDS REACHING 20 TO
   30 MPH DURING THE LATE AFTERNOON. TEMPERATURES SHOULD WARM INTO THE
   80S WITH RH VALUES DROPPING TO BETWEEN 12 AND 20 PERCENT. GUSTY
   WINDS WILL CONTINUE THROUGH THE EVENING...VEERING TO THE NW AND N IN
   THE WAKE OF A COLD FRONT PASSAGE.
   
   ...COLUMBIA BASIN OF ERN WA...
   LOCALIZED/SHORT-DURATION CRITICAL CONDITIONS APPEAR PROBABLE SAT
   AFTERNOON...AS THE REGION LIES ON THE SRN PERIPHERY OF A
   MID/UPPER-LEVEL JET CENTERED FROM SWRN CANADA INTO THE NRN HIGH
   PLAINS. SUSTAINED SURFACE WINDS SHOULD APPROACH 20 MPH AROUND PEAK
   HEATING AS RH VALUES DROP TO AROUND 20 PERCENT.
   
   ...PORTIONS OF S-CNTRL/SERN WY...
   LOCALIZED/SHORT-DURATION CRITICAL CONDITIONS SHOULD DEVELOP DURING
   THE LATE AFTERNOON SAT...ALONG THE NRN SLOPES OF THE S-CNTRL
   MTNS/WRN SLOPES OF THE LARAMIE MTNS. AS LOW-LEVEL WLYS STRENGTHEN
   DURING THE AFTERNOON...SUSTAINED SURFACE SPEEDS SHOULD BRIEFLY REACH
   20 MPH LATE IN THE DAY. THIS SHOULD BE JUXTAPOSED WITH RH VALUES
   AROUND 15 PERCENT.
   
   ..GRAMS.. 09/25/2009
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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