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 240949
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0349 AM CST WED JAN 24 2007
   
   VALID 241200Z - 251200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   LARGE SCALE UPPER TROUGH WILL AMPLIFY ACROSS THE GREAT LAKES THROUGH
   EARLY THURSDAY AND ACT TO MAINTAIN DEEP-LAYER NWLY FLOW ACROSS MUCH
   OF THE EAST. MEANWHILE...A HIGHLY AMPLIFIED FLOW REGIME WILL
   ENCOMPASS THE WEST THIS PERIOD AS A LARGE UPPER RIDGE...CURRENTLY
   ACROSS THE WEST COAST...SPREADS EWD/INLAND OVER THE GREAT BASIN. THE
   UPPER RIDGE IS FORECAST TO WEAKEN SLIGHTLY THROUGH THURSDAY MORNING
   AS A SRN BRANCH CUT-OFF LOW RETROGRADES WEST ACROSS NRN MEXICO.
   GENERALLY WEAK DEEP-LAYER NELY FLOW WILL PERSIST FROM THE LOWER CO
   VALLEY...ACROSS SRN CA AND NRN BAJA...BETWEEN THE UPPER RIDGE AND
   THE LOW OVER MEXICO.
   
   ...SRN CA...
   LOW RH AND WARMER TEMPERATURES ARE FORECAST FROM THE LA BASIN SWD
   ACROSS THE SAN DIEGO AREA TODAY UNDER PERSISTENT...BUT GENERALLY
   WEAK...OFFSHORE FLOW. AFTERNOON RH VALUES DROPPING BELOW 15 PERCENT
   AND TEMPERATURES IN THE LOW 70S F COULD CONTRIBUTE TO NEAR CRITICAL
   CONDITIONS AROUND PASSES AND CANYON AREAS WHERE WINDS MAY BE LOCALLY
   ENHANCED. CANYON WINDS MAY ALSO INCREASE LATE IN THE PERIOD AS
   LARGER SCALE HEIGHT GRADIENT BETWEEN GREAT BASIN HIGH AND MEXICO LOW
   STRENGTHENS. HOWEVER...COOLER TEMPERATURES AND HIGHER RH EXPECTED BY
   EARLY THURSDAY SHOULD OFFSET ANY FIRE DANGER POSED BY STRONGER
   WINDS.
   
   ..CARBIN.. 01/24/2007
   
   ...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 241000
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0400 AM CST WED JAN 24 2007
   
   VALID 251200Z - 261200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   DEEP UPPER TROUGH WILL CONTINUE TO SPREAD ACROSS THE NORTHEAST U.S.
   ON THURSDAY WITH A COLD/DRY AIR MASS ENCOMPASSING MUCH OF THE NATION
   BENEATH SURFACE HIGH PRESSURE FROM THE SRN HIGH PLAINS TO THE GREAT
   LAKES. HIGH PRESSURE RIDGE ACROSS THE GREAT BASIN IS FORECAST TO
   WEAKEN FURTHER WHICH WILL ALLOW CUT-OFF LOW OVER NRN MEXICO TO BEGIN
   TO LIFT NWD TOWARD AZ/NM. MODELS BEGIN TO DIVERGE WITH THE MOVEMENT
   OF THE CUT-OFF LOW BY EARLY FRIDAY. THE SLOWER AND MORE WWD POSITION
   OF THIS FEATURE AS DEPICTED IN NAM-WRF...LATEST SREF...AND ECMWF IS
   PREFERRED...AS OPPOSED TO THE MORE PROGRESSIVE SOLUTION DEPICTED IN
   THE GFS.
   
   ...EXTREME SRN CA...
   SIMILAR CONDITIONS TO WEDNESDAY ARE EXPECTED ACROSS THE SAN DIEGO
   AREA ON THURSDAY. DEPENDING ON THE POSITION AND STRENGTH OF THE
   CUT-OFF LOW ACROSS NRN MEXICO...A PERIOD OF SLIGHTLY STRONGER ELY
   FLOW MAY DEVELOP THROUGH THE CANYONS AND PASSES NEAR AND NORTH OF
   THE U.S./MEXICAN BORDER AREA. MAX TEMPERATURES IN THE LOWER 70S F...
   RH VALUES OF 15-20 PERCENT... AND WINDS POSSIBLY EXCEEDING 20 MPH
   COULD ALL CONTRIBUTE TO NEAR CRITICAL CONDITIONS DURING THE
   AFTERNOON. A CRITICAL AREA WILL NOT BE ISSUED AT THIS TIME GIVEN
   UNCERTAINTIES REGARDING FORECAST WIND SPEEDS AND RELATIVE LIMITED
   AREAL COVERAGE OF GREATER FIRE POTENTIAL.
   
   ..CARBIN.. 01/24/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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