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 221248
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0748 AM CDT FRI SEP 22 2006
   
   VALID 221200Z - 231200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR NRN CA...
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SRN CA AND LOWER CO
   RIVER VALLEY...
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF E-CNTRL NM...NWRN
   TX...SWRN OK...
   
   ...SYNOPSIS...
   LARGE MID/UPPER-LEVEL TROUGH WILL REMAIN ANCHORED ACROSS THE
   NRN/CNTRL ROCKIES INTO THE UPPER MIDWEST. STRONG CYCLONIC FLOW WILL
   BE PRESENT AROUND THIS TROUGH FROM THE PACIFIC NW THROUGH THE SRN
   GREAT BASIN AND ACROSS THE CNTRL/SRN PLAINS. AT THE SURFACE...LOW
   PRESSURE WILL INTENSIFY THIS AFTERNOON ACROSS THE TX/OK PANHANDLES.
   SURFACE HIGH PRESSURE WILL DEVELOP SWD ACROSS THE PACIFIC NW INTO
   THE NRN GREAT BASIN. A STEEP PRESSURE GRADIENT ACROSS NRN CA WILL
   BUILD SWD INTO SRN CA.
   
   ...CRITICAL FIRE WEATHER AREA - NRN CA...
   
   PRIMARY CONDITIONS: STRONG WINDS / LOW RH / SHORT-TERM DRYNESS
   
   A STRONG SURFACE PRESSURE GRADIENT WAS ALREADY PRESENT THIS MORNING
   AND HAS HELPED GUSTY N/NELY WINDS MAINTAIN POOR RH RECOVERY ACROSS
   PORTIONS OF THE NRN SACRAMENTO VALLEY. REGIONAL WIND PROFILERS
   INDICATE A NLY LOW-LEVEL JET OF AROUND 40 TO 60 MPH EXISTS ACROSS
   THIS AREA. DAYTIME HEATING WILL PROVIDE ADDITIONAL MIXING OF THESE
   STRONG WINDS...WITH A GRADUAL SHIFT TO ELY DIRECTION OVER TIME.
   SUSTAINED SURFACE WINDS OF 20 TO 30 MPH WILL BE COMMON DOWNWIND OF
   THE SISKIYOUS/SIERRAS/COASTAL MTNS. LOCAL GUSTS OF 40 TO 50 MPH WILL
   ALSO OCCUR...MAINLY IN FAVORABLY ORIENTED CANYON/PASSES. SUBSIDENCE
   ASSOCIATED WITH THE DOWNSLOPE FLOW WILL ENHANCE DRYING WITH DEW
   POINTS LIKELY IN THE TEENS AND 20S. AS TEMPERATURES WARM INTO THE
   70S/80S...MIN RH VALUES WILL FALL TO AROUND 6 TO 12 PERCENT. SURFACE
   WINDS WILL DIMINISH SOMEWHAT TONIGHT. HOWEVER...CONTINUED MODERATE
   FLOW WILL SUPPORT POOR RH RECOVERY...ESPECIALLY ALONG WRN SLOPES OF
   THE SIERRAS.
   
   ...CRITICAL FIRE WEATHER AREA - PORTIONS OF SRN CA AND LOWER CO
   RIVER VALLEY...
   
   PRIMARY CONDITIONS: GUSTY WINDS / LOW RH / SHORT-TERM DRYNESS
   
   A COLD FRONT MOVING ACROSS CNTRL/SRN NV THIS MORNING WILL PUSH A
   SURGE OF DRY NLY WINDS ACROSS THE MOJAVE DESERT/LOWER CO RIVER
   VALLEY BY THIS AFTERNOON. THE SURFACE PRESSURE GRADIENT WILL
   INCREASE BEHIND THIS FRONT...AS HIGH PRESSURE BUILDS INTO THE NRN
   GREAT BASIN. SUSTAINED NLY WINDS OF 20 TO 25 MPH APPEAR LIKELY.
   ALTHOUGH TEMPERATURES WILL BE COOLER...RH VALUES WILL STILL BE
   CRITICALLY LOW FROM 8 TO 12 PERCENT. FURTHER W ACROSS THE SRN CA
   COASTAL RANGE...OFFSHORE WINDS WILL SUBSTANTIALLY INCREASE THIS
   EVENING AND OVERNIGHT. N/NELY WINDS SHOULD GUST TO AROUND 30 TO 40
   MPH IN MANY LOCATIONS...WITH LOCALIZED HIGHER GUSTS AROUND 50 MPH.
   RH VALUES SHOULD DROP TO CRITICALLY LOW VALUES THIS EVENING...FROM 6
   TO 12 PERCENT. VERY POOR RH RECOVERY CAN BE EXPECTED AS THE WINDS
   INCREASE IN STRENGTH OVERNIGHT.
   
   ...CRITICAL FIRE WEATHER AREA - PORTIONS OF E-CNTRL NM...NWRN
   TX...SWRN OK...
   
   PRIMARY CONDITIONS: MODERATE WINDS / LOW RH
   
   AS SURFACE LOW PRESSURE INTENSIFIES ACROSS THE OK/TX PANHANDLES...AN
   AXIS OF CRITICALLY LOW RH AND STRONG WINDS SHOULD DEVELOP THIS
   AFTERNOON TO THE W/N OF A DRYLINE. DEW POINTS WERE GENERALLY IN THE
   30S IN THE DRY SECTOR THIS MORNING. AS TEMPERATURES WARM INTO THE
   80S TO MID 90S...RH VALUES WILL DROP TO AROUND 12 TO 18 PERCENT.
   SURFACE WINDS WILL NOT BE AS STRONG AS ON THURSDAY...HOWEVER
   SUSTAINED SPEEDS OF 20 TO 25 MPH STILL APPEAR LIKELY.
   
   ..GRAMS.. 09/22/2006
   
   ...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 220950
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0450 AM CDT FRI SEP 22 2006
   
   VALID 231200Z - 241200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SRN CA...
   
   ...SYNOPSIS...
   A LARGE UPPER-LEVEL TROUGH ACROSS THE NRN PLAINS/CNTRL ROCKIES WILL
   EJECT NEWD TOWARDS THE GREAT LAKES REGION. STRONG MID-LEVEL WINDS
   WILL SPREAD ACROSS THE PLAINS...DIMINISHING ACROSS THE PACIFIC NW
   AND NRN CA. SURFACE LOW PRESSURE SHOULD BECOME CENTERED ACROSS THE
   WRN GREAT LAKES BY SATURDAY EVENING...WITH AN ASSOCIATED COLD FRONT
   MOVING SEWD ACROSS THE MID-MS RIVER VALLEY AND SRN PLAINS. HIGH
   PRESSURE WILL CONTINUE TO BUILD SEWD THROUGH THE NRN INTERMOUNTAIN
   WEST.
   
   ...CRITICAL FIRE WEATHER AREA - PORTIONS OF SRN CA...
   
   PRIMARY CONDITIONS: STRONG WINDS / LOW RH
   
   ONGOING CRITICAL EVENT IS EXPECTED AT THE BEGINNING OF DAY 2 WITH
   OFFSHORE FLOW LEADING TO STRONG GUSTY WINDS ALONG MUCH OF THE SRN CA
   COASTAL RANGE. THE SURFACE PRESSURE GRADIENT WILL RELAX SOMEWHAT
   DURING THE DAY...BUT SHOULD BECOME RATHER STRONG AGAIN ON SATURDAY
   EVENING/NIGHT. HOWEVER...MID/UPPER-LEVEL WIND SUPPORT WILL SLOWLY
   MOVE E OF THE AREA. THUS...WINDS SHOULD NOT BE QUITE AS STRONG ON
   SUNDAY MORNING VERSUS SATURDAY MORNING. SUSTAINED SPEEDS OF 20 TO 30
   MPH WILL BE LIKELY DURING THE NIGHTTIME/MORNING HOURS WITH LOCAL
   GUSTS IN CANYONS/PASSES AROUND 40 TO 50 MPH POSSIBLE. TEMPERATURES
   SHOULD BE QUITE WARM DURING THE AFTERNOON /IN THE 80S TO LOWER
   90S/...AIDED BY DOWNSLOPE FLOW. VERY LOW RH OF 5 TO 10 PERCENT CAN
   BE EXPECTED. THE GUSTY OVERNIGHT WINDS WILL PROVIDE POOR RH
   RECOVERY.
   
   ...NRN CA...
   GUSTY WINDS SHOULD BE ONGOING SATURDAY MORNING SUPPORTING POOR RH
   RECOVERY. AS TEMPERATURES WARM INTO THE 70S AND 80S ONCE
   AGAIN...CRITICALLY LOW RH VALUES OF 8 TO 12 PERCENT WILL DEVELOP.
   HOWEVER...MID/UPPER-LEVEL WINDS ARE FORECAST TO WEAKEN CONSIDERABLY
   SATURDAY MORNING. SUSTAINED WINDS SHOULD REMAIN BELOW 20 MPH IN MOST
   AREAS ON SATURDAY AFTERNOON...PRECLUDING A CRITICAL AREA ISSUANCE
   ATTM. WITH A MODERATE SURFACE PRESSURE GRADIENT ACROSS THE
   AREA...LOCALIZED HIGHER GUSTS NEAR 25 TO 30 MPH COULD STILL OCCUR
   ALONG THE WRN SLOPES OF THE SIERRAS.
   
   ..GRAMS.. 09/22/2006
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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