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 170844
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0344 AM CDT TUE OCT 17 2006
   
   VALID 171200Z - 181200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SRN CA...
   
   ...SYNOPSIS...
   A STRONG UPPER TROUGH WILL DIG SEWD THROUGH THE WRN CONUS TODAY. IN
   ADVANCE OF THIS TROUGH...MODERATE SWLY WINDS WILL DEVELOP OVER THE
   SRN PLAINS. IN THE WAKE OF THIS TROUGH...HIGH PRESSURE WILL DEVELOP
   SWD THROUGH THE GREAT BASIN. AN OFFSHORE FLOW PATTERN WILL SET UP
   TOWARDS THE END OF THE PERIOD AND SUPPORT A CRITICAL FIRE WEATHER TO
   PORTIONS OF SRN CA.
   
   ...CRITICAL FIRE WEATHER AREA - MTNS/PASSES AND CANYONS OF THE SRN
   CA COASTAL RANGE...
   
   PRIMARY CONDITIONS: DEVELOPING SANTA ANA WIND EVENT...LOW RH
   READINGS
   
   AS HIGH PRESSURE DEVELOPS SWD THROUGH THE INTERIOR PORTIONS OF THE
   PAC NW INTO THE NRN GREAT BASIN IN THE WAKE OF A SEASONABLY STRONG
   UPPER TROUGH...THE PRESSURE GRADIENT WILL BECOME LIGHT TO MODERATE
   OFFSHORE OVER MUCH OF CA. THE STRONGEST GRADIENT /-10 MB/ IS
   EXPECTED TO DEVELOP FROM SRN NV TO SRN CA OVERNIGHT. PRESENT
   INDICATIONS ARE THAT CRITICALLY STRONG WIND SPEEDS /SUSTAINED NELY
   20-30 MPH WITH GUSTS OVER 40 MPH/ WILL DEVELOP OVER THE HIGHER
   TERRAIN AND BELOW PASSES AND THROUGH CANYONS OF SRN CA AFTER 18/06Z.
   STRONG SUBSIDENCE IN THE WAKE OF THE UPPER TROUGH ALONG WITH
   ADVECTION OF DRIER AIR FROM THE GREAT BASIN WILL SUPPORT POOR RH
   RECOVERY OVERNIGHT WITH RH READINGS FROM 15-20 PERCENT IN THE
   WINDIEST LOCATIONS. CRITICAL FIRE WEATHER CONDITIONS WILL LAST INTO
   DAY 2.
   
   ...NRN/CENTRAL CA...
   MODERATE NLY WINDS /SUSTAINED AROUND 20 MPH/ WILL DEVELOP OVER THE
   SACRAMENTO VALLEY DURING THE AFTERNOON AS A MODERATE NLY PRESSURE
   GRADIENT EXISTS. RELATIVELY COOL TEMPERATURES IN THE WAKE OF THE
   UPPER TROUGH WILL LIMIT MIN RH READINGS TO ABOVE 20 PERCENT.
   OVERNIGHT...THE OFFSHORE GRADIENT WILL BE WEAKER THAN FURTHER SOUTH
   /~6 MB/. THIS WILL LIKELY SUPPORT NEAR CRITICAL FIRE WEATHER
   CONDITIONS AS SUSTAINED NELY WINDS FROM 15-20 MPH WITH GUSTS UP TO
   30 MPH DEVELOP AFTER 18/06Z.
   
   ...SRN HIGH PLAINS...
   RECENT RAINFALL WILL HAMPER ANY CRITICAL FIRE WEATHER CONDITIONS
   FROM DEVELOPING. HOWEVER...SUSTAINED SWLY WINDS FROM 20-25 MPH WITH
   HIGHER GUSTS WILL DEVELOP THIS AFTERNOON AS SFC LOW PRESSURE DEEPENS
   OVER THE TX PANHANDLE...AND STRONG MID LEVEL FLOW OVERSPREADS THE
   REGION. MILD TEMPERATURES IN THE 80S WILL COMBINE WITH DEWPTS IN THE
   30S/40S TO SUPPORT MIN RH READINGS FROM 15-25 PERCENT.
   
   ..CROSBIE.. 10/17/2006
   
   ...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 170846
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0346 AM CDT TUE OCT 17 2006
   
   VALID 181200Z - 191200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SRN CA...
   
   ...SYNOPSIS...
   SANTA ANA WIND EVENT WILL BE ONGOING AT THE START OF THE PERIOD OVER
   PORTIONS SRN CA RESULTING IN CRITICAL FIRE WEATHER CONDITIONS.
   MODERATE NLY WINDS WILL ALSO DEVELOP OVER THE LOWER CO RIVER VALLEY
   SUPPORTING NEAR CRITICAL FIRE WEATHER CONDITIONS. MEANWHILE...AHEAD
   OF A SEASONABLY STRONG UPPER TROUGH A STRONG COLD FRONT WILL PUSH
   SWD THROUGH THE SRN PLAINS. IN THE WAKE OF THE FRONT MOST OF THE
   PLAINS WILL BE UNDER THE INFLUENCE OF COOL TEMPERATURES AND HIGH
   PRESSURE. AHEAD OF THE FRONT...MOIST CONDITIONS WILL PRECLUDE ANY
   CRITICAL FIRE WEATHER CONCERNS.
   
   ...CRITICAL FIRE WEATHER AREA - MTNS/PASSES AND CANYONS OF THE SRN
   CA COASTAL RANGE...
   
   PRIMARY CONDITIONS: SUSTAINED NELY WINDS FROM 20-30 MPH WITH GUSTS
   UP TO 50 MPH
   
   SANTA ANA WIND EVENT WILL BE ONGOING AT THE START OF THE
   PERIOD...WHERE THE OFFSHORE PRESSURE GRADIENT BETWEEN COASTAL AREAS
   AND SRN NV WILL REMAIN MODERATE TO STRONG /-10 TO -12 MB/. WINDS
   WILL SLOWLY DIMINISH THROUGH THE MORNING HRS BEFORE RE-INTENSIFYING
   DURING THE OVERNIGHT HRS /AFTER 19/00Z/. ALTHOUGH WINDS WED NIGHT
   ARE NOT EXPECTED TO BE AS STRONG AS EARLY WED MORNING /OFFSHORE
   GRADIENT RELAXES TO -8 TO -10 MB/...POOR RH RECOVERY WILL COMBINE
   WITH MODERATE SUSTAINED WINDS OVER 25 MPH TO SUPPORT A CONTINUED
   CRITICAL FIRE WEATHER THREAT.
   
   ...LOWER CO RIVER VALLEY...
   AS THE UPPER TROUGH AXIS PASSES THROUGH THE AREA EARLY IN THE
   PERIOD...STRONG SUBSIDENCE AND BUILDING HIGH PRESSURE THROUGH THE
   SRN GREAT BASIN WILL SUPPORT MODERATE NLY WINDS /SUSTAINED 15-20
   MPH/ TO DEVELOP OVER THE LOWER CO RIVER VALLEY IN THE MORNING. MILD
   TEMPERATURES IN THE 80S AND LOW DEWPTS IN THE 20S ADVECTING IN THE
   REGION ON THE NLY WINDS WILL SUPPORT MIN RH READINGS FROM 10-15
   PERCENT DURING THE AFTERNOON. WEAKENING PRESSURE GRADIENT AND MID
   LEVEL WIND FIELDS ARE EXPECTED TO CAUSE A DIMINISHING TREND IN SFC
   WIND SPEEDS IN THE AFTERNOON. ANTICIPATED LACK OF STRONG WINDS
   DURING THE LOWEST RH READINGS WILL PRECLUDE A CRITICAL FIRE WEATHER
   THREAT.
   
   ...NRN/CENTRAL CA...
   OFFSHORE GRADIENT WILL AGAIN REMAIN WEAKER THAN OVER SRN CA...WITH
   SUSTAINED ENELY WINDS FROM 15-20 MPH AND GUSTS UP TO 30 MPH POSSIBLE
   EARLY IN THE PERIOD AND AGAIN AFTER 19/00Z. LOW RH READINGS /AROUND
   15 PERCENT/ WILL PREVALENT OVER MUCH OF THE INTERIOR SECTIONS OF THE
   STATE AS DRIER GREAT BASIN AIR CONTINUES TO ADVECT WWD IN THE WAKE
   OF THE UPPER TROUGH.
   
   ..CROSBIE.. 10/17/2006
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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