Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 070842
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0342 AM CDT THU AUG 07 2003
   
   VALID 071200Z - 081200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   UPPER LEVEL RIDGE WILL INCREASE ITS AREAL COVERAGE THROUGH THE
   PERIOD WHILE SLOWING MOVING WWD OVER THE SRN ROCKIES. A BROAD UPPER
   TROUGH WILL REMAIN OVER THE NRN PACIFIC...WITH A CLOSED LOW CENTERED
   OFF THE ORE/WA COAST. SHORTWAVE TROUGHS WILL MOVE THROUGH THE BASE
   OF THE UPPER TROUGH/LOW AND AFFECT THE PAC NW/NRN ROCKIES. NEAR
   CRITICAL FIRE WEATHER CONDITIONS WILL BE SEEN OVER THE GREAT
   BASIN...WHERE LOW LEVEL WINDS FIELDS WILL BE BREEZY...AND LOW RH
   READINGS WILL BE PRESENT. MONSOONAL MOISTURE WILL CONTINUE TO ADVECT
   WWD EARLY THIS MORNING ON THE OUTFLOW FROM LAST NIGHT/S CONVECTION.
   THEREFORE THUNDERSTORM CHANCES WILL INCREASE OVER NRN AZ NWD INTO
   ERN UT/WRN CO AND SCENTRAL WY. ISOLATED THUNDERSTORMS WILL ALSO BE
   POSSIBLE OVER THE CASCADES AHEAD OF AN EMBEDDED SHORTWAVE
   TROUGH....AND OVER NRN ID/WRN MT IN A REGION OF BROAD UPPER LEVEL
   ASCENT. OVERALL COVERAGE OF DRY THUNDERSTORMS OVER THE WEST SHOULD
   REMAIN BELOW CRITICAL LEVELS.
   
   ...MUCH OF THE GREAT BASIN...
   UPPER LEVEL RIDGING WILL SHIFT AXIS OF STRONGEST MID LEVEL FLOW WWD
   TO NEAR THE WRN PORTIONS OF THE GREAT BASIN/PAC NW COAST DURING THE
   PERIOD. VERY LOW RH READINGS WILL REMAIN OVER THE GREAT BASIN...WITH
   MIN READINGS AROUND 10 PERCENT OVER NV/SRN ID AND WRN UT. SUSTAINED
   WINDS FROM 15-20 MPH WITH GUSTS TO 30 MPH WILL BE POSSIBLE OVER THE
   REGION DURING THE AFTERNOON/EARLY EVENING. THE OVERALL DURATION OF
   SUSTAINED WINDS ABOVE CRITICAL LEVELS WILL BE LESS THAN NECESSARY
   FOR A CRITICAL FIRE WEATHER THREAT.
   
   ...NERN ID/SWRN MT...
   ISOLATED DRY THUNDERSTORMS WILL BE POSSIBLE DURING THE
   AFTERNOON/EARLY EVENING OVER THE AREA. OVERALL COVERAGE OF
   THUNDERSTORMS WILL BE LIMITED BY LACK OF LARGE SCALE LIFTING
   MECHANISM.
   
   ...NCENTRAL AZ NEWD INTO CENTRAL WY...
   THUNDERSTORM CHANCES WILL ADVANCE SLOWLY WWD OVER THE FOUR
   CORNERS/ROCKIES AS THE UPPER HIGH SHIFTS WWD. THE GREATEST THREAT
   FOR DRY THUNDERSTORMS WILL BE ON THE WRN FRINGE OF MID LEVEL
   MOISTURE/INSTABILITY...WHERE LOW LEVELS WILL START OFF VERY
   DRY/WARM. CONVECTION WILL LIKELY TRANSITION FROM DRY-WET OVER THE
   AREA INTO THE EARLY EVENING AS MOISTURE INCREASES FROM EAST TO WEST
   DUE TO THUNDERSTORM OUTFLOW.
   
   ..CROSBIE.. 08/07/2003
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      
Day 2 Fire Weather Forecast graphic

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 070922
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0422 AM CDT THU AUG 07 2003
   
   VALID 081200Z - 091200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   UPPER RIDGE WILL CONTINUE ITS HOLD OVER MUCH OF THE SRN/CENTRAL
   ROCKIES...WHILE SLOWLY BROADENING. MAIN UPPER LOW/BROAD TROUGH OFF
   THE PAC NW COAST IS FORECAST TO MOVE SLOWLY EWD. OVERALL PATTERN
   THOUGH WILL REMAIN RELATIVELY UNCHANGED OVER THE WEST. NEAR CRITICAL
   FIRE WEATHER CONDITIONS WILL BE PRESENT OF MUCH OF THE GREAT BASIN.
   ELSEWHERE ACROSS THE WEST...MONSOONAL MOISTURE WILL CONTINUE ITS WWD
   MOVEMENT. ISOLATED DRY THUNDERSTORMS WILL BE POSSIBLE AGAIN ON THE
   WRN EDGE OF THE MONSOON...FROM CENTRAL UT NEWD INTO WRN WY.
   
   ...GREAT BASIN...
   MID LEVEL FLOW WILL INCREASE IN INTENSITY OVER THE WRN GREAT BASIN
   IN RESPONSE TO TIGHTENING MID LEVEL THERMAL GRADIENT. THIS INCREASE
   IN MID LEVEL WINDS ALONG WITH STEEP LOW-MID LEVEL LAPSE RATES WILL
   SUPPORT SFC WINDS AOA 20 MPH FOR SEVERAL HOURS OVER WRN/NRN NV NWD
   INTO PORTIONS OF SRN/CENTRAL ID. MIN RH READINGS WILL REMAIN AROUND
   10 PERCENT...WITH POOR RH RECOVERY OVERNIGHT. IF TRENDS IN THE
   CURRENT FORECAST CONTINUE...THEN THE AREA WOULD NEED TO BE UPGRADED
   IN TOMORROW/S DAY ONE OUTLOOK FOR A CRITICAL FIRE WEATHER THREAT.
   
   ..CROSBIE.. 08/07/2003
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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