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 110944
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0344 AM CST SUN NOV 11 2007
   
   VALID 111200Z - 121200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   THE LARGE SCALE NEGATIVELY-TILTED TROUGH ENTERING THE WESTERN UNITED
   STATES WILL AMPLIFY OVER THE FORECAST PERIOD AND WILL MOVE INTO THE
   CENTRAL ROCKIES BY MONDAY MORNING.  A COLD FRONT ASSOCIATED WITH
   THIS SYSTEM WILL MOVE THROUGH THE UPPER MIDWEST THROUGH SOUTHERN
   CALIFORNIA BRINGING PRECIPITATION TO PORTIONS OF THE WESTERN
   TWO-THIRDS OF THE U.S. AHEAD OF THIS UPPER-LEVEL THROUGH...A LEE
   TROUGH WILL REMAIN ACROSS THE HIGH AND CENTRAL PLAINS...WITH SOME
   LOW RELATIVE HUMIDITY VALUES BEHIND A DRYLINE IN NEW MEXICO AND
   SOUTHEAST COLORADO.  ELSEWHERE IN THE COUNTRY...A UPPER-LEVEL RIDGE
   WILL BUILD OVER THE EAST COAST...AND A SURFACE HIGH PRESSURE SYSTEM
   WILL KEEP DRY AIR IN PLACE OVER THE SOUTHEAST STATES...WITH SOME LOW
   RELATIVE HUMIDITY VALUES EXPECTED.
   
   ...SOUTHEASTERN STATES...
   A SURFACE HIGH PRESSURE SYSTEM OVER THE EAST COAST WILL KEEP WIND
   SPEEDS LIGHT OVER THE REGION DURING SUNDAY...BUT THE DRY AIRMASS IN
   PLACE WILL CONTINUE AS IN PREVIOUS DAYS...AND RELATIVE HUMIDITY
   VALUES WILL FALL SLIGHTLY BELOW CRITICAL VALUES IN SOME AREAS FOR A
   FEW HOURS DURING THE AFTERNOON.  THE LOWEST RELATIVE HUMIDITY VALUES
   ARE EXPECTED TO BE AROUND 20 TO 25 PERCENT.  GIVEN THE LIGHT WIND
   SPEEDS AND SEASONABLE TEMPERATURES...A CRITICAL FIRE WEATHER RISK IS
   NOT NEEDED.
   
   ...HIGH PLAINS...
   A LEE TROUGH WILL EXIST OVER THE HIGH PLAINS AND GREAT PLAINS
   THROUGH THE FORECAST PERIOD...AND A WEAK DRYLINE WILL DEVELOP AND
   PERSIST FROM THE KS/CO BORDER SOUTHWARD TO THE TX/NM BORDER. BEHIND
   THE DRYLINE...RELATIVE HUMIDITY VALUES WILL DROP INTO THE TEENS AND
   PERHAPS SINGLE DIGITS DURING THE AFTERNOON...AND TEMPERATURES WILL
   BE FAIRLY WARM IN THE 70S F....BUT LIGHT WIND SPEEDS OF 5 TO 15 MPH
   WILL HELP TO KEEP THE FIRE WEATHER RISK AT A MINIMUM.
   
   ..LEVIT.. 11/11/2007
   
   ...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 110945
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0345 AM CST SUN NOV 11 2007
   
   VALID 121200Z - 131200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR SOUTHERN CA...
   
   ...SYNOPSIS...
   THE LARGE AMPLITUDE TROUGH OVER THE WESTERN UNITED STATES WILL MOVE
   INTO THE MIDWEST AND WEAKENS SOMEWHAT AS THE UPPER-LEVEL LOW
   PRESSURE SYSTEM OVER SOUTHERN CALIFORNIA MOVES SOUTH AND BECOMES
   CUT-OFF FROM THE LARGE-SCALE FLOW.  A HIGH PRESSURE SYSTEM WILL
   BUILD INTO THE GREAT BASIN AFTER THE PASSAGE OF THE LOW...AND SANTA
   ANA WIND CONDITIONS ARE EXPECTED IN SOUTHWESTERN CALIFORNIA.  A
   SURFACE HIGH PRESSURE WILL REMAIN IN THE SOUTHEASTERN STATES AND
   SOME LOW RH VALUES CAN BE EXPECTED DURING THE AFTERNOON HOURS.  IN
   THE CENTRAL PART OF THE U.S...A COLD FRONT WILL MOVE THROUGH WITH
   COOLER TEMPERATURES AND SOME PRECIPITATION.
   
   ...CRITICAL FIRE WEATHER AREA - SOUTHERN CA...
   
   PRIMARY CONDITIONS: OFFSHORE FLOW WITH STRONG AND GUSTY
   WINDS...DROUGHT
   
   THE UPPER-LEVEL LOW PRESSURE SYSTEM CURRENTLY OFF THE COAST OF CA
   WILL MOVE SOUTHEASTWARD AND EVENTUALLY BECOME CUT-OFF TO THE WEST OF
   THE BAJA PENINSULA.  ASSOCIATED WITH THIS FEATURE WILL BE A COLD
   FRONT THAT WILL MOVE THROUGH THE AREA ON SUNDAY EVENING /DAY
   1/...POSSIBLY BRINGING SOME LIGHT RAIN TO PORTIONS OF THE AREA...BUT
   SOME DRIER AIR WILL MOVE IN BEHIND THE FRONT. ADDITIONALLY...A
   SURFACE HIGH PRESSURE SYSTEM WILL BUILD INTO THE GREAT BASIN...AND
   WIND PROFILES WILL BECOME FAVORABLE FOR A WEAK TO MODERATE SANTA ANA
   EVENT OVER THE REGION.  OFF-SHORE WIND SPEEDS ARE EXPECTED TO BE
   AROUND 15 TO 25 MPH WITH HIGHER GUSTS.  THE STRONG WIND SPEEDS ARE
   THE MAIN REASON FOR THE CRITICAL RISK...AS EXCEPTIONALLY LOW
   RELATIVE HUMIDITY VALUES ARE NOT FORECAST...THOUGH SOME DRYING CAN
   BE EXPECTED WITH DOWNSLOPE WINDS IN CANYONS.
   
   THANKS TO SGX AND LOX FOR ADDITIONAL COORDINATION.
   
   ...SOUTHEASTERN STATES...
   AS IN THE PREVIOUS SEVERAL DAYS...THE DRY AIR MASS IN PLACE WILL
   REMAIN...AND RH VALUES WILL FALL BELOW 30 PERCENT FOR A FEW HOURS
   DURING THE AFTERNOON ON MONDAY.  WIND SPEEDS WILL REMAIN LIGHT...AND
   WHILE TEMPERATURES WARM SLIGHTLY...CRITICAL FIRE CONDITIONS ARE NOT
   EXPECTED.
   
   ..LEVIT.. 11/11/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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