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 300949
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0349 AM CST SUN DEC 30 2007
   
   VALID 301200Z - 311200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   THE LONGWAVE UPPER TROUGH OVER THE CENTRAL CONUS WILL BE REINFORCED
   AS ANOTHER STRONG SYSTEM MOVES FROM THE PAC NW INTO THE ROCKIES. IN
   THE WAKE OF THIS SYSTEM...SFC HIGH PRESSURE WILL BUILD OVER THE
   GREAT BASIN SUPPORTING THE DEVELOPMENT OF OFFSHORE WINDS ACROSS SRN
   CA LATE THE PERIOD. DESPITE INCREASING WINDS...CRITICAL FIRE WEATHER
   CONDITIONS ARE NOT EXPECTED UNTIL DAY 2 IN THIS AREA. ELSEWHERE
   ACROSS THE NATION...MILD TEMPERATURES WILL BE FOUND OVER THE SRN
   PLAINS AS DOWNSLOPE FLOW COMMENCES AHEAD OF THE ROCKIES UPPER
   TROUGH. BUT LIGHT SFC WINDS WILL PRECLUDE ANY FIRE WEATHER CONCERNS.
   ABOVE NORMAL TEMPERATURES WILL CONTINUE OVER THE SERN STATES AHEAD
   OF A COLD FRONT LOCATED ACROSS AL/GA AND THE CAROLINAS. MUCH NEEDED
   RAINFALL WILL BE FOUND ALONG THIS FRONTAL BOUNDARY.
   
   ...SRN CA...
   IN THE WAKE OF AN UPPER TROUGH MOVING THROUGH THE PAC NW AND NRN
   ROCKIES TODAY...SFC HIGH PRESSURE WILL BUILD RAPIDLY INTO THE GREAT
   BASIN DURING THE OVERNIGHT HOURS. AS A RESULT...OFFSHORE /FOEHN/
   WINDS WILL DEVELOP AND STRENGTHEN OVER THE FAVORED TERRAIN AREAS OF
   SRN CA LATE TONIGHT. HOWEVER...THE DURATION OF LOW RH READINGS WILL
   BE MITIGATED GIVEN THE TIME OF NIGHT AND ONSET OF STRONGEST
   WINDS...THUS PRECLUDING A CRITICAL FIRE WEATHER THREAT UNTIL DAY 2.
   
   ..CROSBIE.. 12/30/2007
   
   ...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 301016
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0416 AM CST SUN DEC 30 2007
   
   VALID 311200Z - 011200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR THE MTNS/INTERIOR VALLEYS OF SRN
   CA...
   
   ...SYNOPSIS...
   IN RESPONSE TO A LARGE AREA OF BUILDING HIGH PRESSURE OVER THE GREAT
   BASIN/CENTRAL ROCKIES...SFC WINDS WILL INCREASE OVER SRN CA AND
   PORTIONS OF THE DESERT SW. WHERE THE WINDS WILL BE THE
   STRONGEST...ACROSS THE MTNS AND INTERIOR VALLEYS OF SRN CA...
   CRITICAL FIRE WEATHER CONDITIONS WILL EXIST THROUGH THE ENTIRE
   PERIOD. ELSEWHERE ACROSS THE NATION...A STRONG COLD FRONT WILL MOVE
   RAPIDLY SEWD THROUGH MUCH OF THE PLAINS AND INTO THE ERN STATES
   AHEAD OF A STRONG UPPER TROUGH. DESPITE GUSTY NWLY WINDS BEHIND THE
   FRONT...MARGINAL RH READINGS WILL PRECLUDE ANY CRITICAL FIRE WEATHER
   POTENTIAL OVER THE SRN PLAINS.
   
   ...CRITICAL FIRE WEATHER AREA - MTNS/INTERIOR VALLEYS OF SRN CA...
   
   PRIMARY CONDITIONS: SUSTAINED NELY WINDS FROM 25-35 MPH WITH GUSTS
   OVER 50 MPH...MIN RH READINGS AROUND 10 PERCENT...LONG TERM DROUGHT
   
   SUSTAINED NELY /FOEHN/ WINDS SUPPORTED BY A BUILDING AREA OF HIGH
   PRESSURE OVER THE GREAT BASIN /1040+ MB/ WILL INCREASE TO AROUND 30
   MPH DURING THE PERIOD ACROSS THE FAVORED TERRAIN ENHANCED WIND AREAS
   AS THE PRESSURE GRADIENT STRENGTHENS THROUGH THE PERIOD. WIND GUSTS
   OVER 50 MPH WILL BE POSSIBLE...ESPECIALLY AFTER 01/00Z...WHEN
   DIURNAL EFFECTS COUPLE WITH THE STRONGEST PRESSURE GRADIENT BETWEEN
   THE HIGHER DESERT AND THE COAST. THE LOWEST MIN RH READINGS /AROUND
   10 PERCENT/ ARE EXPECTED TO OCCUR WHERE THE STRONGEST WINDS
   ARE...LEADING TO A CRITICAL FIRE WEATHER THREAT. DESPITE THE TIME OF
   YEAR...THE LENGTH OF THE RECENT DRY SPELL COMBINED WITH THE
   AFOREMENTIONED WEATHER VARIABLES SUPPORTS A CRITICAL FIRE WEATHER
   THREAT. THE LACK OF ADDITIONAL UPPER SUPPORT AND THE MORE LOCALIZED
   NATURE OF CRITICAL FIRE WEATHER CONDITIONS SHOULD PRECLUDE THE NEED
   FOR AN EXTREMELY CRITICAL OUTLOOK AREA.
   
   ...LOWER CO RIVER VALLEY/SRN AZ...
   NLY WINDS WILL INCREASE AS HIGH PRESSURE BUILDS OVER THE GREAT
   BASIN/CENTRAL ROCKIES DURING THE PERIOD. DESPITE SUSTAINED WINDS
   FROM 15-25 MPH...NEAR AVERAGE SFC TEMPERATURES IN THE 60S/MIN RH
   READINGS FROM 20-25 PERCENT WILL PREVENT CRITICAL FIRE WEATHER
   CONDITIONS.
   
   ..CROSBIE.. 12/30/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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