Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 070756
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0256 AM CDT FRI OCT 07 2005
   
   VALID 071200Z - 081200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   SANTA ANA EVENT HAS ENDED ACROSS SRN CA...AS SURFACE RIDGE HAS
   PROGRESSED EWD OUT OF THE INTERMOUNTAIN WEST DURING THE LAST 12-24
   HOURS. SURFACE ANTICYCLONE THIS MORNING EXTENDS FROM NWRN ONTARIO
   AND THE ERN DAKOTAS SWD INTO THE SRN PLAINS. ANTICYCLONE IS
   ACCOMPANIED BY UNSEASONABLY COOL TEMPERATURES ACROSS MOST OF THE
   CENTRAL U.S.
   
   UPCOMING FORECAST PERIOD WILL BE MARKED BY CONTINUED MODERATION OF
   SURFACE TEMPERATURES ACROSS MUCH OF THE CENTRAL AND SRN ROCKIES.
   THIS WILL OCCUR AS UPPER TROUGH OVER THE NERN PACIFIC DIGS AS IT
   APPROACHES THE WEST COAST. DOWNSTREAM 500MB RIDGING AND ENEWD
   EXPANSION OF 700MB THERMAL RIDGE ACROSS AZ/NM/CO WILL YIELD WARM
   TEMPERATURES ACROSS THE SRN ROCKIES WWD THROUGH THE SRN GREAT BASIN
   AND INTERIOR CENTRAL/SRN CA. MINIMUM RH VALUES AT OR BELOW 20
   PERCENT SHOULD GENERALLY BE CONFINED TO THE WARMEST AREAS...COVERING
   THE WRN GREAT BASIN...CENTRAL/WRN AZ...AND MUCH OF INTERIOR CA
   ESPECIALLY AT LOWER ELEVATIONS. A WEAK SURFACE THERMAL TROUGH WILL
   DEVELOP OVER THE LOWER CO RIVER VALLEY NNWWD INTO THE WRN GREAT
   BASIN THIS AFTERNOON...WITH A RELATIVELY FLAT SEA-LEVEL PRESSURE
   FIELD. COASTAL SRN CA SURFACE WINDS SHOULD BECOME LIGHT ONSHORE WITH
   RH VALUES HIGHER THAN THE PREVIOUS 2-3 DAYS. ELSEWHERE IN THE
   SW...WINDS WILL GENERALLY BE LIGHT /AT OR BELOW 15 MPH/ GIVEN WEAK
   MID-LEVEL FLOW FIELDS DURING THE DAYLIGHT HOURS AND FLAT SEA-LEVEL
   PRESSURE GRADIENT. LIGHT WIND WILL MITIGATE FIRE WEATHER PROBLEMS
   STEMMING FROM MODERATELY LOW RH AND DRY ANTECEDENT FUEL CONDITIONS
   IN THE SWRN CONUS REGION THIS PERIOD.
   
   ..BANACOS.. 10/07/2005
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      
Day 2 Fire Weather Forecast graphic

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 070755
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0255 AM CDT FRI OCT 07 2005
   
   VALID 081200Z - 091200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR THE LOWER CO RIVER VALLEY AND
   ADJACENT AREAS OF THE INTERIOR SWRN U.S....
   
   ...SYNOPSIS...
   DURING THE DAY 2 PERIOD...CONTINUED AMPLIFICATION OF WRN U.S. TROUGH
   IS EXPECTED BASED ON LATEST NAM AND GFS SOLUTIONS. THE 07/00Z NAM IS
   SOMEWHAT MORE INTENSE IN DIGGING THE TROUGH INTO THE LOWER CO RIVER
   VALLEY DURING THE PEAK HEATING HOURS SATURDAY AFTERNOON...DEPICTING
   A 75-80KT 500MB JET ON UPWIND SIDE OF THE TROUGH AXIS ROTATING INTO
   TROUGH BASE AROUND 09/00Z. AT LOW-LEVELS...FRONTAL ZONE WILL
   INTENSIFY FROM NE-SW FROM CENTRAL WY SWWD ACROSS CENTRAL UT INTO
   S-CENTRAL NV. FIRE WEATHER CONCERNS WILL FOCUS SOUTH OF THE FRONT
   WHERE DRY SWLY TRAJECTORIES AND STRENGTHENING WIND FIELDS THROUGHOUT
   TROPOSPHERE WILL RESULT IN A LARGE AREA OF WINDY CONDITIONS
   ACCOMPANIED BY LOW DAYTIME RH VALUES.
   
   ...CRITICAL FIRE WEATHER AREA 1 - INTERIOR SRN CA...CENTRAL/WRN
   AZ...SRN NV...AND FAR SWRN UT...
   
   PRIMARY CONDITIONS: MODERATE WINDS / LOW RH VALUES / AREAS OF DRY
   FUELS
   
   SWLY WINDS WILL GRADUALLY INCREASE DURING THE LATE MORNING AND EARLY
   AFTERNOON HOURS...REACHING 15-30 MPH ACROSS THE CRITICAL FIRE
   WEATHER AREA DURING THE MID-AFTERNOON THROUGH EVENING HOURS.
   BOUNDARY LAYER WILL DEEPEN TO 7-10 KFT SOUTH OF FRONTAL
   ZONE...RESULTING IN SIGNIFICANT VERTICAL MIXING AND LOW-LEVEL DRYING
   DURING THE PEAK HEATING HOURS. MINIMUM RH VALUES IN VALLEY/BASIN
   AREAS WILL LIKELY FALL INTO THE 10-20 PERCENT RANGE. LOW-LEVEL
   STABILIZATION WILL LESSEN FIRE WEATHER THREAT IN MOST AREAS AFTER
   SUNSET...HOWEVER...MAINTENANCE OF MODERATE WINDS AT HIGHER
   ELEVATIONS WILL RESULT IN POOR RH RECOVERY AND SOME CONTINUED
   LOCALIZED FIRE WEATHER THREAT THROUGH THE OVERNIGHT PERIOD.
   
   ..BANACOS.. 10/07/2005
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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