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 050836
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0236 AM CST FRI JAN 05 2007
   
   VALID 051200Z - 061200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR SRN CA COASTAL AREA AND LOWER CO
   RIVER VALLEY...
   
   ...SYNOPSIS...
   LARGE MID-LEVEL TROUGH FROM THE NRN ROCKIES SWWD THROUGH THE GREAT
   BASIN AND SRN CA WILL DIG E/SEWD INTO THE UPPER MIDWEST AND SRN
   ROCKIES/NRN MEXICO BY 12Z SATURDAY. A LEE SURFACE LOW OVER CNTRL CO
   WILL TRACK SEWD ACROSS THE SRN PLAINS. ATTENDANT COLD FRONT WILL
   PUSH ACROSS THE FOUR CORNERS AND SRN CA THIS MORNING...AND ACROSS
   THE SRN ROCKIES/HIGH PLAINS BY THIS EVENING. SUBSIDENCE IN THE WAKE
   OF THE MID-LEVEL TROUGH AND SURFACE FRONT WILL SUPPORT STRENGTHENING
   HIGH PRESSURE OVER THE GREAT BASIN.
   
   ...CRITICAL FIRE WEATHER AREA - SRN CA COASTAL AREA AND LOWER CO
   RIVER VALLEY...
   
   PRIMARY CONDITIONS: STRONG OFFSHORE WINDS / LOW RH / MODERATE
   DROUGHT
   
   GUSTY OFFSHORE WINDS WILL INTENSIFY THIS MORNING LEADING TO RAPID
   DRYING AND WIDESPREAD CRITICAL CONDITIONS DEVELOPING FROM
   MID-AFTERNOON THROUGH TONIGHT. THE WINDS WILL INCREASE AS STRONG
   SUBSIDENCE OCCURS BEHIND THE PASSAGE OF A COLD FRONT/MID-LEVEL
   TROUGH. SUSTAINED N/NELY WINDS OF 25 TO 35 MPH WILL BE COMMON.
   HIGHER SUSTAINED WINDS OF 35 TO 45 MPH WILL ALSO OCCUR...ESPECIALLY
   ALONG THE CO RIVER VALLEY AND IN FAVORED CANYONS/PASSES OF THE
   COASTAL MTNS. ALTHOUGH AFTERNOON TEMPERATURES WILL BE COOL
   /GENERALLY IN THE 50S TO MID 60S/...RH VALUES WILL LIKELY DROP TO
   AROUND 10 TO 15 PERCENT. IN ADDITION...A STRONG N/NELY MID-LEVEL JET
   /60 T0 80 MPH AT 700 TO 500 MB/ WILL DEVELOP IN THE LATE
   AFTERNOON/EARLY EVENING. LOW/MID-LEVEL WINDS WILL BE OPTIMALLY
   ALIGNED FOR POTENTIALLY INTENSE WIND GUSTS ACROSS PORTIONS OF THE
   COASTAL MTNS THIS EVENING. THIS WILL ALSO LEAD TO VERY LITTLE
   OVERNIGHT RH RECOVERY ACROSS MUCH OF THE COASTAL AREA.
   
   ...SERN NM PLAINS/PORTIONS OF THE TRANSPECOS REGION OF W TX...
   WLY WINDS WILL GREATLY INCREASE THROUGH THE MID/UPPER-LEVELS TODAY
   AS A LARGE-SCALE TROUGH APPROACHES. LOW-LEVEL WINDS SHOULD NOT
   INCREASE QUITE AS MUCH...WITH A WEAK SURFACE PRESSURE GRADIENT
   PRESENT AHEAD OF A COLD FRONT. SUSTAINED AFTERNOON WLY WINDS OF 15
   TO 20 MPH SHOULD OCCUR. DOWNSLOPE FLOW WILL BE SUFFICIENT FOR
   MARGINALLY LOW RH VALUES OF 15 TO 20 PERCENT WITH AFTERNOON
   TEMPERATURES IN THE UPPER 60S TO MID 70S.
   
   ..GRAMS.. 01/05/2007
   
   ...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 050939
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0339 AM CST FRI JAN 05 2007
   
   VALID 061200Z - 071200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR SRN CA COASTAL AREA...
   
   ...SYNOPSIS...
   A LARGE UPPER-LEVEL TROUGH WILL BE MAINTAINED ACROSS THE CNTRL CONUS
   THROUGH THE PERIOD. AN INITIAL SHORTWAVE TROUGH WILL LIFT NEWD FROM
   THE UPPER MS RIVER VALLEY AND A SECONDARY SHORTWAVE WILL QUICKLY
   DROP SEWD FROM THE FAR NWRN CONUS/SRN BRITISH COLUMBIA INTO THE NRN
   PLAINS. SURFACE HIGH PRESSURE OVER THE GREAT BASIN WILL INITIALLY
   WEAKEN AS THE LATTER SHORTWAVE TROUGH ENTERS THE NRN CONUS...BEFORE
   STRENGTHENING EARLY SUNDAY AS LARGE-SCALE SUBSIDENCE INCREASES. A
   SRN STREAM SHORTWAVE TROUGH...EXPECTED TO BE ACROSS THE SRN ROCKIES
   AT 12Z SATURDAY...WILL BECOME INCREASINGLY SHEARED AS IT MOVES EWD
   OVER THE SRN PLAINS. IN ITS WAKE...MID-LEVEL RIDGING WILL BUILD EWD
   TOWARDS THE CA COAST.
   
   ...CRITICAL FIRE WEATHER AREA - SRN CA COASTAL AREA...
   
   PRIMARY CONDITIONS: LONG DURATION OF LOW RH / OFFSHORE WINDS /
   MODERATE DROUGHT
   
   GUSTY OFFSHORE WINDS AND VERY POOR RH RECOVERY ARE EXPECTED TO BE
   ONGOING SATURDAY MORNING ALONG AND DOWNWIND OF THE COASTAL MTNS.
   THIS SHOULD LEAD TO A LONG DURATION OF LOW RH AOB 15 PERCENT AWAY
   FROM THE IMMEDIATE COAST LINE. WITH TEMPERATURES GENERALLY REACHING
   THE 60S DURING THE AFTERNOON...MIN RH VALUES SHOULD DROP TO 5 TO 10
   PERCENT. WINDS WILL SIGNIFICANTLY WEAKEN...ESPECIALLY DURING THE
   AFTERNOON...AS THE SURFACE PRESSURE GRADIENT SLACKENS AND MID-LEVEL
   KINEMATIC SUPPORT WANES. HOWEVER...E/NELY WINDS SHOULD INCREASE
   EARLY SUNDAY MORNING AS HIGH PRESSURE INTENSIFIES OVER THE GREAT
   BASIN. SUSTAINED SPEEDS OF 20 TO 30 MPH SHOULD OCCUR IMMEDIATELY
   DOWNSLOPE OF THE COASTAL MTNS.
   
   ...LOWER CO RIVER VALLEY...
   NLY WINDS AND LOW RH WILL CONTINUE FROM DAY 1...BUT AFTERNOON WIND
   SPEEDS WILL BE MUCH WEAKER WITH A DIMINISHING SURFACE PRESSURE
   GRADIENT. SUSTAINED SPEEDS SHOULD ONLY REACH 10 TO 15 MPH. WITH
   TEMPERATURES AROUND 60 DEGREES F...RH VALUES WILL LIKELY FALL TO 10
   TO 15 PERCENT.
   
   ..GRAMS.. 01/05/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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