Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 310744
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0244 AM CDT TUE AUG 31 2004
   
   VALID 311200Z - 011200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   LITTLE CHANGE IN OVERALL FIRE WEATHER CONDITIONS ACROSS THE CONUS
   THIS PERIOD. A PRONOUNCED 700MB THERMAL RIDGE WILL REMAIN IN PLACE 
   ACROSS THE SRN GREAT BASIN...WHILE BUILDING NWD INTO ID/WRN MT
   TODAY. THIS WILL LEAD TO A CONTINUED WARMING TREND IN THE NRN
   ROCKIES WITH HIGH TEMPERATURES IN THE 80S TO LOWER 90S. AFTERNOON RH
   WILL FALL BELOW 20 PERCENT ACROSS THE MAJORITY OF THE INTERMOUNTAIN
   WEST...WITH THE EXCEPTION OF S-CENTRAL CO AND CENTRAL/ERN NM WHERE
   SCATTERED WET THUNDERSTORMS ARE ONCE AGAIN EXPECTED. LIGHT WINDS
   WILL LESSEN LARGE-SCALE FIRE WEATHER IMPACT ACROSS MOST OF THE WRN
   CONUS...HOWEVER...LOCALIZED PLUME DOMINANT ACTIVITY IS POSSIBLE IN
   HEAVIER FUEL LOADINGS.
   
   ...INTERIOR WA AND ORE FAR NRN CA...
   
   STRONG UPPER TROUGH CENTERED OFF THE BRITISH COLUMBIA COAST EARLY
   THIS MORNING /50N 137W/ WILL APPROACH THE WA/ORE COASTLINE BY THE
   END OF THE PERIOD. AS WIND FIELDS INCREASE ALOFT...SOME INCREASE IN
   SURFACE WINDS ARE LIKELY ACROSS THE CASCADES EWD INTO THE COLUMBIA
   BASIN. WLY WINDS OF 15-20 MPH ARE POSSIBLE ALONG THE EAST SLOPES OF
   THE CASCADES BY LATE AFTERNOON/THIS EVENING. VERY WARM
   TEMPERATURES...IN THE UPPER 80S TO LOWER 90S WILL YIELD MINIMUM RH
   VALUES OF 15-20 PERCENT. ADDITIONAL WEAK UPPER VORT NEAR 39N 128W
   WILL MOVE NEWD INTO NRN CA/SWRN ORE BY AFTERNOON. WEAK INSTABILITY
   AND FORCING FOR ASCENT ASSOCIATED WITH THIS FEATURE MAY RESULT IN
   ISOLATED MIX OF DRY AND WET THUNDERSTORM ACTIVITY OVER THE INTERIOR
   VALLEYS OF ORE AND FAR NRN CA DURING THE AFTERNOON/EVENING PERIOD. 
   
   ...SWRN CONUS...
   VERY HOT TEMPERATURES WILL CONTINUE ACROSS SRN CA...THE SRN GREAT
   BASIN...AND AZ...WITH READINGS AT LOW ELEVATIONS OF 100-110F. WINDS
   WILL CONTINUE TO BE LIGHT /GENERALLY 15 MPH OR LESS/ AND DRIVEN BY
   LOCAL MOUNTAIN-VALLEY CIRCULATIONS WITH STRONG RIDGING ALOFT.
   EXTREMELY LOW RH VALUES /5-15 PERCENT/ AND DEEP MIXING THIS
   AFTERNOON /12-15 KFT MIXING HEIGHTS/ SUGGEST MODERATE TO HIGH PLUME
   DOMINANT WILDFIRE POTENTIAL THIS PERIOD.
   
   ..BANACOS.. 08/31/2004
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      
Day 2 Fire Weather Forecast graphic

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 310746
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0246 AM CDT TUE AUG 31 2004
   
   VALID 011200Z - 021200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR NERN CA...THE NWRN GREAT
   BASIN...AND PORTIONS OF THE NRN ROCKIES...
   ...CRITICAL FIRE WEATHER AREA FOR THE CENTRAL/WRN DAKOTAS...
   
   ...SYNOPSIS...
   DURING THE DAY 2 PERIOD...STRONG 700MB THERMAL RIDGE EXTENDING FROM
   AZ NNEWD INTO CENTRAL MT AT 01/12Z WILL SHIFT RAPIDLY EWD INTO THE
   DAKOTAS IN RESPONSE TO APPROACHING STRONG UPPER TROUGH. ETA AND GFS
   ARE CONSISTENT IN BRINGING 500MB TROUGH AXIS INTO CENTRAL WA/ORE
   FROM THE WNW BY 02/00Z. THIS SYSTEM APPEARS QUITE INTENSE AT THE
   PRESENT TIME OFF THE CENTRAL BRITISH COLUMBIA COAST...AND IS PROGGED
   TO REMAIN QUITE STRONG AS IT MOVES INTO THE PACIFIC NW. INCREASES IN
   DEEP-LAYER SWLY FLOW WILL RESULT IN WIDESPREAD WINDY AND DRY
   CONDITIONS WEDNESDAY AFTERNOON/EVENING IN A CORRIDOR FROM NERN CA
   NEWD TO SWRN MT.
   
   SURFACE TROUGH DEVELOPING IN THE LEE OF THE ROCKIES WILL BE
   ASSOCIATED WITH MODERATE SLY WINDS...LOW RH...AND HOT TEMPERATURES
   WEDNESDAY AFTERNOON ACROSS THE CENTRAL/WRN DAKOTAS BRINGING AN
   INCREASED FIRE WEATHER THREAT.
   
   ...CRITICAL FIRE WEATHER AREA 1 - NERN CA...SERN ORE...NRN NV...FAR
   NWRN UT...SRN/ERN ID...NWRN WY...AND SWRN/S-CENTRAL MT...
   
   PRIMARY CONDITIONS: STRONG WINDS / LOW RH VALUES
   
   SWLY WINDS INCREASING TO 20-35 MPH APPEAR LIKELY BY WEDNESDAY
   AFTERNOON IN A BELT EXTENDING FROM NRN CA TO SWRN MT. AT
   02/00Z...SURFACE COLD FRONT ASSOCIATED WITH UPPER TROUGH WILL BE
   LOCATED ALONG A LINE FROM ROUGHLY CUT BANK MT SWWD ACROSS CENTRAL ID
   INTO SERN ORE. DEEP VERTICAL MIXING AHEAD OF THE FRONT COMBINED WITH
   INCREASING WIND FIELDS AND PREVAILING DRY AIR MASS WILL CONTRIBUTE
   TO RH MINIMUMS BETWEEN 10-20 PERCENT. HIGH TEMPERATURES WILL RANGE
   FROM THE MID 80S ACROSS LOWER ELEVATIONS OF W-CENTRAL MT TO THE
   LOW/MID 90S ACROSS THE SNAKE RIVER VALLEY OF ID SWWD INTO THE NWRN
   GREAT BASIN. STRONG WINDS WILL CONTINUE THROUGH THE OVERNIGHT
   PERIOD...BUT WITH AN IMPROVEMENT IN FIRE WEATHER CONDITIONS AS RH
   RECOVERS BEHIND COLD FRONT AS IT CONTINUES SEWD ACROSS MUCH OF THE
   CRITICAL FIRE WEATHER AREA BY 02/12Z.
   
   ...CRITICAL FIRE WEATHER AREA 2 - CENTRAL/WRN NORTH AND SOUTH
   DAKOTA...
   
   PRIMARY CONDITIONS: MODERATE WINDS / LOW RH VALUES / HOT
   TEMPERATURES
   
   STRONG PRESSURE FALLS ACROSS THE NRN HIGH PLAINS REGION WILL RESULT
   IN AN INCREASE IN SLY WINDS TO 20-25 MPH AT TIMES ACROSS THE
   CENTRAL/WRN DAKOTAS DURING WEDNESDAY AFTERNOON. AS 700MB THERMAL
   RIDGE SHIFTS OVERHEAD...HOT TEMPERATURES ARE LIKELY IN THIS AREA
   WITH HIGHS GENERALLY IN THE 90S /10-15F ABOVE NORMAL/. THIS WILL
   CONTRIBUTE TO RH MINIMUMS AROUND 20 PERCENT FOR SEVERAL HOURS FROM
   MID AFTERNOON THROUGH EARLY EVENING. WINDS SHOULD SUBSIDE AFTER
   SUNSET AS BOUNDARY LAYER STABILIZES...WITH AN ACCOMPANYING INCREASE
   IN RH.
   
   ..BANACOS.. 08/31/2004
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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