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 280810
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0310 AM CDT THU AUG 28 2008
   
   VALID 281200Z - 291200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR NORTHERN CALIFORNIA...
   
   ...SYNOPSIS...
   STRONG ZONAL FLOW CONTINUES OVER THE NWRN U.S. AS A SHORTWAVE
   THROUGH MOVES FROM THE NRN PLAINS TO THE GREAT LAKES. SURFACE HIGH
   PRESSURE BUILDS EWD THROUGH THE NWRN CONUS...CAUSING BREEZY WLY
   SURFACE WINDS OVER NRN MT. BUT TEMPERATURES ACROSS THIS REGION ARE
   RELATIVELY COOL AND GENERALLY IN THE MID 60S TO LOWER 70S WITH
   MINIMUM RH REMAINING AT OR ABOVE 20 PERCENT. FARTHER SOUTH...A VERY
   DRY AIRMASS RESIDES BENEATH THE FLAT UPPER RIDGE EXTENDING FROM THE
   ERN PACIFIC TO THE SRN PLAINS. THE HOT WEATHER WILL CONTINUE IN
   CA...WITH OFFSHORE FLOW BRINGING CRITICAL CONDITIONS TO NWRN CA. A
   COLD FRONT WILL MOVE THROUGH THE CENTRAL PLAINS THIS AFTERNOON...
   WITH INCREASING NELY SURFACE WINDS AND MODERATELY LOW RH /AT OR
   ABOVE 20 TO 25 PERCENT/ IN ITS WAKE. SHOWERS AND THUNDERSTORMS AND A
   SEASONABLY HUMID AIRMASS COVER THE SRN/ERN PORTION OF THE CONUS.
   
   ...CRITICAL FIRE WEATHER AREA - NRN CA...
   
   PRIMARY CONDITIONS: HOT...VERY LOW RH...BREEZY TO WINDY OFFSHORE
   FLOW
   
   A THERMAL TROUGH WILL REMAIN STATIONARY NEAR THE COASTAL MOUNTAINS
   OF NRN/CNTRL CA. VERY HOT TEMPERATURES AROUND 105F ARE AGAIN
   EXPECTED IN THE SACRAMENTO VALLEY...WITH MINIMUM RH FALLING TO ABOUT
   5 PERCENT. BREEZY TO WINDY OFFSHORE FLOW IS CREATING VERY POOR RH
   RECOVERY EARLY THIS MORNING...AND SETTING THE STAGE FOR A PROLONGED
   PERIOD OF CRITICAL FIRE WEATHER CONDITIONS TODAY. NELY WINDS WILL BE
   STRONGEST IN THE MOUNTAIN/FOOTHILL PASSES AT NRN END OF THE
   SACRAMENTO VALLEY /GUSTING OVER 30 MPH/. THE COMBINATION OF HIGH
   HEAT...VERY LOW HUMIDITY...AND LOCALIZED GUSTS MAY CAUSE ISOLATED
   AREAS TO APPROACH THE EXTREMELY CRITICAL THRESHOLD LATE THIS MORNING
   AND INTO THE AFTERNOON. AS THE SURFACE HIGH MOVES INLAND THE
   OFFSHORE PRESSURE GRADIENT SHOULD GRADUALLY WEAKEN LATE IN THE
   PERIOD...ALTHOUGH THE OFFSHORE FLOW AND WARM/DRY PATTERN WILL
   PERSIST INTO FRIDAY.
   
   ..BRIGHT.. 08/28/2008
   
   ...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 280811
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0311 AM CDT THU AUG 28 2008
   
   VALID 291200Z - 301200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   THE AMPLITUDE OF THE UPPER PATTERN BEGINS TO INCREASE FRIDAY...AS
   THE UPPER RIDGE SHIFTS EWD INTO THE PLAINS AND A TROUGH APPROACHES
   THE PACIFIC NORTHWEST. SURFACE HIGH PRESSURE WILL COVER THE CENTRAL
   STATES...BUILDING SEWD IN THE WAKE OF A COLD FRONT EXTENDING FROM
   THE OHIO VALLEY TO THE SRN PLAINS. THE THERMAL TROUGH OVER NWRN CA
   IS SUPPRESSED SWD...AS THE SURFACE FLOW GRADUALLY TURNS ONSHORE.
   SHOWERS AND THUNDERSTORMS WILL EXTEND FROM WRN NEW ENGLAND TO THE
   GULF COAST...WITH MONSOON CONVECTION EXPECTED TO CONTINUE IN THE
   SOUTHWEST.
   
   ...NRN CA...
   RH RECOVERY THURSDAY NIGHT/FRIDAY MORNING MAY AGAIN BE POOR...AS
   OFFSHORE FLOW LINGERS INTO THE MORNING HOURS. HOWEVER THE TREND IS
   FOR WINDS TO DECREASE AND BECOME ONSHORE AROUND MID DAY FRIDAY.
   TEMPERATURES IN THE SACRAMENTO VALLEY WILL REMAIN HOT AND OVER
   100F...BUT COOLER PACIFIC AIR SHOULD BEGIN TO PENETRATE THE COASTAL
   MOUNTAINS AND VALLEYS BY EARLY AFTERNOON. A COLD FRONTAL PASSAGE IS
   EXPECTED FRIDAY NIGHT.
   
   ..BRIGHT.. 08/28/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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