Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

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   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 030908
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0308 AM CST THU DEC 03 2009
   
   VALID 031200Z - 041200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   LARGE-SCALE UPPER-LEVEL TROUGH WILL AMPLIFY ACROSS THE CNTRL CONUS.
   AN EMBEDDED IMPULSE WILL DIVE SWD ALONG THE WRN PERIPHERY OF THE
   TROUGH ACROSS THE INTERMOUNTAIN WEST INTO THE SOUTHWEST. IN THE WAKE
   OF THIS IMPULSE...A SURFACE ANTICYCLONE WILL BUILD ALONG THE
   NRN/CNTRL ROCKIES.
   
   ...SRN CA...
   N/NELY LOW-LEVEL FLOW WILL STRENGTHEN OVER THE LOWER CO RIVER VALLEY
   THIS EVENING AFTER A COLD FRONT PASSES IN ASSOCIATION WITH A
   MID-LEVEL IMPULSE SHIFTING SWD INTO THE SOUTHWEST. MODEL CONSENSUS
   SUGGESTS WINDS SHOULD REMAIN WEAK FARTHER WEST ALONG THE SRN CA
   COASTAL RANGES...BUT BECOME LOCALLY GUSTY IN CANYONS/PASSES FROM THE
   INLAND EMPIRE SWD ALONG THE PENINSULAR RANGES TOWARDS 12Z/FRI. COOL
   TEMPERATURES /PRIMARILY IN THE 40S/ SHOULD MITIGATE LOW RH FROM
   OCCURRING OVERNIGHT.
   
   ..GRAMS.. 12/03/2009
   
   ...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 030909
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0309 AM CST THU DEC 03 2009
   
   VALID 041200Z - 051200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   HIGHLY-AMPLIFIED UPPER-LEVEL TROUGH WILL PERSIST FROM HUDSON BAY
   S/SWWD THROUGH TX ON FRI. A VIGOROUS SHORT WAVE TROUGH WILL DIG SWD
   FROM BRITISH COLUMBIA ACROSS THE PACIFIC NW/NRN INTERMOUNTAIN WEST
   BY EARLY SAT. STOUT SURFACE ANTICYCLONE CENTERED INVOF THE CNTRL
   ROCKIES WILL WEAKEN AS IT SHIFTS S/SEWD INTO THE SRN HIGH PLAINS.
   
   ...SRN CA COASTAL RANGES FROM THE SAN BERNARDINO MTNS SWD...
   RELATIVELY HIGH UNCERTAINTY PERSISTS OVER THE INTENSIFICATION AND
   DURATION OF OFFSHORE FLOW FRI MORNING FROM THE SAN BERNARDINO MTNS
   SWD ALONG THE PENINSULAR RANGES OF SRN CA. ECMWF RUNS HAVE
   CONSISTENTLY DEPICTED ONLY WEAK E/NELYS ACROSS THIS AREA. RECENT GFS
   RUNS HAVE TRENDED CLOSER TO THE ECMWF...BUT STILL DEPICT A PERIOD OF
   LOCALLY MODERATE WINDS AROUND 12Z/FRI. MAJORITY OF NAM-BASED SREF
   MEMBERS REMAIN ON THE STRONGER SPECTRUM OF GUIDANCE AND ARE
   SUGGESTIVE OF AREAS OF SUSTAINED SURFACE WINDS FROM 20 TO 25 MPH. 
   
   COOL TEMPERATURES PRIMARILY IN THE 40S AT 12Z/FRI...SHOULD MITIGATE
   LOW RH FROM DEVELOPING UNTIL AFTER THE DIURNAL HEATING CYCLE HAS
   COMMENCED. SINGLE-DIGIT RH VALUES SHOULD BECOME WIDESPREAD BY FRI
   AFTERNOON ACROSS SRN CA AWAY FROM THE IMMEDIATE COASTAL AREA.
   NEVERTHELESS...SURFACE WINDS SHOULD BE DIMINISHING LATER FRI MORNING
   AS THE PRESSURE GRADIENT RELAXES. ANY JUXTAPOSITION OF STRONG WINDS
   WITH LOW RH WOULD LIKELY BE SHORT-LIVED AND/OR LOCALIZED.
   
   ..GRAMS.. 12/03/2009
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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