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 250911
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0311 AM CST SUN NOV 25 2007
   
   VALID 251200Z - 261200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR MTNS OF SRN CA...
   
   ...SYNOPSIS...
   AS AN UPPER LOW OVER NRN MEXICO EJECTS NEWD INTO THE SRN PLAINS
   THROUGH THE PERIOD... THE OFFSHORE WINDS OVER SRN CA WILL DIMINISH
   AS SURFACE HIGH PRESSURE MOVES AWAY FROM THE SRN ROCKIES. CRITICAL
   FIRE WEATHER CONDITIONS WILL EXIST DURING THE MORNING HOURS /PRIOR
   TO 18Z/ OVER THE MTNS OF SRN CA BEFORE WINDS DIMINISH TO LESS THAN
   20 MPH. VERY DRY AIR WILL EXIST OVER MUCH OF INTERIOR CA AND THE
   GREAT BASIN UNDER THE PRESENCE OF UPPER RIDGING. ELSEWHERE ACROSS
   THE NATION...SCT MOD/HVY PRECIPITATION WILL BE POSSIBLE OVER THE SRN
   PLAINS INTO THE SERN STATES AHEAD OF THE EJECTING UPPER LOW.
   
   ...CRITICAL FIRE WEATHER AREA - MTNS OF SRN CA...
   
   PRIMARY CONDITIONS: SUSTAINED E-NELY WINDS FROM 20-25 MPH WITH GUSTS
   OVER 30 MPH...MIN RH READINGS FROM 5-10 PERCENT...LONG TERM DROUGHT
   
   AS THE UPPER LOW OVER NRN MX CONTINUES TO MOVE EWD...AND AN UPPER
   TROUGH OVER THE NRN CA COAST MOVES SEWD CLOSER TO THE REGION...THE
   SFC PRESSURE GRADIENTS WILL CONTINUE TO WEAKEN THROUGH THE MORNING
   HOURS. DIURNAL ENHANCEMENTS TO THE GRADIENTS WILL SUPPORT SEVERAL
   HOURS OF CRITICALLY STRONG WINDS /MAINLY THROUGH FAVORED TERRAIN
   ENHANCED AREAS/ FROM 20-25 MPH WITH GUSTS OVER 30 MPH THIS MORNING.
   WINDS ARE EXPECTED TO DECREASE TO LESS THAN 20 MPH DURING THE
   AFTERNOON AND BECOME ONSHORE BY LATE IN THE DAY AS THE UPPER TROUGH
   OFF THE COAST MOVES CLOSER TO THE REGION. LOW RH READINGS WILL
   REMAIN OVER THE HIGHER TERRAIN OVERNIGHT...BUT WEAK WINDS WILL
   PRECLUDE ANY CRITICAL CONDITIONS FROM REDEVELOPING.
   
   ..CROSBIE.. 11/25/2007
   
   ...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 250912
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0312 AM CST SUN NOV 25 2007
   
   VALID 261200Z - 271200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A STRONG UPPER TROUGH PRESENTLY OVER THE GULF OF ALASKA WILL MOVE
   INTO THE PAC NW BY THE END OF THE PERIOD. MEANWHILE...AN UPPER
   TROUGH OFF THE SRN CA COAST WILL BECOME CLOSED OFF AND REMAIN NEARLY
   STATIONARY. THIS SYSTEM WILL SUPPORT WEAK ONSHORE FLOW OVER LOWER
   ELEVATIONS OF SRN CA. MEANWHILE...THE UPPER TROUGH OVER THE SRN
   PLAINS ON DAY 1 WILL ACCELERATE NEWD TOWARDS THE EAST COAST. DRY AND
   COOL CONDITIONS WILL BE FOUND IN THE WAKE OF THIS SYSTEM OVER THE
   SRN PLAINS.
   
   ...SRN CA...
   AS A STRONG UPPER TROUGH MOVES INTO THE PAC NW...SHORTWAVE RIDGING
   WILL BUILD INTO NRN CA AND THE NRN GREAT BASIN. THIS WILL AID IN
   CLOSING OFF AN UPPER TROUGH THAT SHOULD BE LOCATED SEVERAL HUNDRED
   MILES OFF THE SRN CA COAST. THIS SHOULD ALSO RESULT IN A VERY SLIGHT
   SWWD MOVEMENT OF THE UPPER LOW THROUGH THE PERIOD. THE ONSHORE FLOW
   THAT BEGAN ON DAY 1 WILL CONTINUE ON DAY 2...SUPPORTED BY THE
   PROXIMITY OF THIS UPPER LOW TO THE COAST. HOWEVER...THE ONSHORE FLOW
   IS EXPECTED TO REMAIN FAIRLY WEAK AND SHALLOW. THUS ANOTHER DAY OF
   LOW RH READINGS WILL OCCUR OVER THE HIGHER TERRAIN. IF THE CENTER OF
   THE UPPER LOW IS CLOSER THAN PRESENTLY FORECAST...A WEAK ELY WIND
   EVENT /SUSTAINED 15-20 MPH/ MAY ENSUE OWING TO AN INCREASING
   GRADIENT.
   
   ..CROSBIE.. 11/25/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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