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 300830
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0330 AM CDT WED JUL 30 2008
   
   VALID 301200Z - 311200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR ERN ID/SWRN MT AND MUCH OF
   WRN/CENTRAL WY...
   ...CRITICAL FIRE WEATHER AREA FOR PARTS OF NRN MT...
   
   ...SYNOPSIS...
   MORNING SATELLITE IMAGERY SHOWS AN UPPER TROUGH MOVING EWD ACROSS
   PARTS OF ERN WASHINGTON AND SRN BC.  A SEASONABLY STRONG UPPER JET
   WILL OVERSPREAD MUCH OF THE NRN ROCKIES REGION TODAY.  AT THE
   SURFACE...A COLD FRONT WILL PUSH EWD OVER THE HIGH PLAINS OF MT
   EXTENDING SWWD OVER PARTS OF THE INTERMOUNTAIN WEST.  INCREASINGLY
   GUSTY WINDS AND MARGINALLY LOW RH WILL LEAD TO AN INCREASED FIRE
   DANGER ACROSS PORTIONS OF THE NORTHERN INTERMOUNTAIN REGION/ROCKIES.
   
   ...CRITICAL FIRE WEATHER AREA - ERN ID/SWRN MT AND MUCH OF
   WRN/CENTRAL WY...
   
   PRIMARY CONDITIONS: STRONG GUSTY WINDS / LOW RH / ISOLATED DRY TSTMS
   
   LATEST DETERMINISTIC GUIDANCE IS INDICATING MID-UPPER FLOW FIELDS TO
   STRENGTHEN DURING THE DAY...LEADING TO POTENTIAL FOR STRONG WINDS
   /SUSTAINED NEAR 20 MPH WITH GUSTS UP TO 35-40 MPH/.  A COLD FRONT
   WILL MOVE E-SEWD ACROSS THE REGION WITH A WIND SHIFT UPON PASSAGE. 
   WINDS ARE EXPECTED TO SLACKEN WITH SWD EXTENT BUT LOW RH ALONG WITH
   POTENTIAL FOR AN ISOLATED DRY TSTM APPEARS TO WARRANT A CRITICAL
   RISK ACROSS THE SRN FRINGES OF HIGHLIGHTED AREA.  00Z/30
   INTERMOUNTAIN WEST-AREA OBSERVED RAOBS DEPICTED DEEPLY MIXED
   BOUNDARY LAYER/INVERTED-V PROFILES.  WHILE DRY TSTM COVERAGE IS
   ANTICIPATED TO BE LESS COMPARED TO PREVIOUS DAY OVER ERN NV/WRN
   UT...COLD FRONT AND MEAGER MID-LEVEL MOISTURE IN VERY ISOLATED AREAS
   MAY BE SUFFICIENT IN INITIATING A FEW ISOLATED AFTN TSTMS
   /ESPECIALLY ACROSS NERN UT INTO WY/.  IN ADDITION TO FIRE
   STARTS...FORECAST SOUNDINGS SHOW STEEP LAPSE RATES WHICH WOULD
   FURTHER PROMOTE STRONG/ERRATIC GUSTY WINDS WITH ANY TSTM.
   
   ...CRITICAL FIRE WEATHER AREA - PARTS OF NRN MT...
   
   PRIMARY CONDITIONS: STRONG WINDS / LOW RH
   
   PACIFIC NW UPPER TROUGH WILL CONTINUE TO APPROACH THE REGION WITH
   STRONG MID-LEVEL WINDS /50-60 KTS AT 500MB/ MOVING OVERHEAD PER
   LATEST GUIDANCE.  ALTHOUGH THERE IS SOME DISAGREEMENT/UNCERTAINTY
   ASSOCIATED WITH LOW RH...EXPECTING AREAS OF RH TO FALL INTO THE
   UPPER TEENS DURING THE LATE AFTN HOURS GIVEN STRONG WLY FLOW
   ALOFT/POST-FRONTAL DOWNSLOPE REGIME.  STRONG WSWLY SURFACE WINDS
   WILL DEVELOP WITH SUSTAINED WINDS 20-30 MPH WITH GUSTS UP TO 40 MPH.
    DIURNAL COOLING AND SUBSEQUENT RH RECOVERY DURING THE EVENING HRS
   WILL LIKELY END AND CONFINE THE CRITICAL THREAT PERIOD.
   
   ..SMITH.. 07/30/2008
   
   ...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 300918
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0418 AM CDT WED JUL 30 2008
   
   VALID 311200Z - 011200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   EXPANSIVE UPPER RIDGE OVER THE SWRN U.S. WILL REMAIN IN PLACE WITH
   UPPER DISTURBANCES TRAVERSING EWD ACROSS THE UPPER MIDWEST AND PARTS
   OF NEW ENGLAND.  NEUTRAL TO WEAK UPPER LEVEL RIDGING WILL OCCUR OVER
   PARTS OF THE NRN INTERMOUNTAIN WEST AHEAD OF A MORE SUBSTANTIAL
   DISTURBANCE MOVING ONSHORE THE BC/WASHINGTON COAST.  DESPITE STRONG
   UPPER FLOW REMAINING OVER PARTS OF THE NRN ROCKIES/INTERMOUNTAIN
   WEST...WEAKER LOW LEVEL WINDS AND SEEMINGLY MARGINAL MIN RH PER
   LATEST DETERMINISTIC/ENSEMBLE GUIDANCE PRECLUDE THE DELINEATION OF A
   CRITICAL AREA.
   
   ..SMITH.. 07/30/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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