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 210651
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0151 AM CDT TUE OCT 21 2008
   
   VALID 211200Z - 221200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR SRN CA COASTAL AREAS...
   ...CRITICAL FIRE WEATHER AREA FOR LOWER CO RIVER VALLEY...
   ...CRITICAL FIRE WEATHER AREA FOR NRN CA/SACRAMENTO VALLEY...
   
   ...SYNOPSIS...
   MULTIPLE AREAS OF ENHANCED FIRE DANGER WILL EXIST TODAY.
   
   AN UPPER TROUGH AFFECTING THE PACIFIC NW THIS MORNING WILL QUICKLY
   DIG SEWD ACROSS THE ROCKIES AND INTO THE CNTRL PLAINS TODAY. A NWLY
   JET AXIS AROUND THE BACKSIDE OF THE TROUGH WILL ALLOW FOR GUSTY WLY
   TO NWLY WINDS ACROSS MUCH OF THE ROCKIES...WITH A LOCALLY ENHANCED
   FIRE THREAT IN ERN UT/NWRN CO AS A COLD FRONT PASSES AND DRY
   CONDITIONS FOLLOW.
   
   MEANWHILE...SURFACE HIGH PRESSURE CENTERED ROUGHLY OVER THE PACIFIC
   NW WILL BUILD EWD AND SWD...SUBSEQUENTLY INCREASING THE PRESSURE
   GRADIENT ACROSS SRN NM/AZ/CA BY EARLY WED MORNING. HOT AND DRY
   CONDITIONS WILL PERSIST...WITH GUSTY NLY/NELY WINDS W OF THE COASTAL
   RANGES IN SRN CA...AND GUSTY NLY WINDS THROUGH THE LOWER CO RIVER
   VALLEY.
     
   FARTHER N...DRY OFFSHORE FLOW...NLY SURFACE WINDS NEAR 15 TO 20 MPH
   IN THE LOWER VALLEYS...AND LOW RELATIVE HUMIDITY WILL CONTRIBUTE TO
   CRITICAL FIRE CONDITIONS ACROSS NRN CA. 
   
   IN THE NERN STATES...A COLD FRONT WILL PASS THROUGH EARLY THIS
   MORNING...WITH STRONG NWLY WINDS FOLLOWING. THESE WINDS MAY
   JUXTAPOSE WITH MARGINAL RH VALUES IN PORTIONS OF VA/MD/PA/DEL AND
   NJ.
   
   FARTHER S...RELATIVE HUMIDITIES WILL DROP INTO THE UPPER 20S AND
   LOWER 30S ACROSS A WIDESPREAD REGION...ALTHOUGH WINDS WILL BE
   LIGHTER THAN AREAS TO THE N.
   
   ...CRITICAL FIRE WEATHER AREA - SRN CA COASTAL AREAS...
   
   PRIMARY CONDITIONS: SANTA ANA WINDS...LOW RH...MODERATE TO SEVERE
   DROUGHT
   
   SURFACE HIGH PRESSURE WILL BUILD SWD AND EWD WITH AN INCREASING
   PRESSURE GRADIENT ACROSS SRN CA BY LATE TUESDAY THROUGH EARLY WED
   MORNING. HOT AND DRY CONDITIONS WILL CONTINUE W OF THE COASTAL
   RANGES AS OFFSHORE FLOW LEADS TO COMPRESSIONAL HEATING. EXTREMELY
   LOW RH VALUES IN THE SINGLE DIGITS WILL COMBINE WITH VERY DRY FUELS
   AND GUSTY WINDS TO CREATE DANGEROUS FIRE WEATHER CONDITIONS ALONG
   AND W OF THE COASTAL RANGE. OVERNIGHT INTO WED MORNING...WINDS WILL 
   INCREASE AS THESE AREAS REMAIN HOT AND RH VALUES REMAIN IN THE
   SINGLE DIGITS. AREAS IN FAVORED CANYONS AND PASSES WILL BE
   ESPECIALLY VULNERABLE TO LOCALLY EXTREME CONDITIONS...WITH GUSTS
   NEAR 50 TO 60 MPH. A LACK OF UPPER SUPPORT/STRONGER WINDS ALOFT WILL
   PRECLUDE AN EXTREME OUTLINE AT THIS TIME...ALTHOUGH AN ENHANCED FIRE
   THREAT WILL CERTAINLY EXIST.
   
   ...CRITICAL FIRE WEATHER AREA - LOWER CO RIVER VALLEY...
   
   PRIMARY CONDITIONS: LOW RH...STRONG WINDS...MODERATE DROUGHT
   
   RELATIVE HUMIDITIES WILL REMAIN IN THE SINGLE DIGITS THROUGHOUT
   TUESDAY...WITH TEMPERATURES IN THE 90S THROUGH THE LOWER VALLEYS.
   OVERNIGHT...LITTLE RH RECOVERY IS EXPECTED AND TEMPERATURES WILL
   REMAIN IN THE UPPER 60S TO LOWER 70S. OVERNIGHT THROUGH EARLY WED
   MORNING...HIGH PRESSURE CURRENTLY CENTERED NEAR THE PACIFIC NW WILL
   CONTINUE TO BUILD SWD AND EWD...INCREASING THE PRESSURE GRADIENT
   ACROSS THE SWRN STATES. NLY WINDS WILL ACCELERATE THROUGH THE LOWER
   CO RIVER VALLEY OVERNIGHT AS LOWER ELEVATIONS REMAIN WARM...WITH
   SUSTAINED SPEEDS CLOSE TO 20 MPH AND GUSTS UP TO 30 MPH.
   
   ...CRITICAL FIRE WEATHER AREA - NRN CA/SACRAMENTO VALLEY...
   
   PRIMARY CONDITIONS: LOW RH...SEVERE DROUGHT...LOCALLY STRONG WINDS
   
   ALTHOUGH THE STRONGER JET WINDS WILL REMAIN E OF CA...NLY WINDS NEAR
   15 TO 20 MPH WILL AFFECT PORTIONS OF THE SACRAMENTO VALLEY...WITH
   STRONGER SPEEDS AT HIGHER ELEVATIONS. RELATIVE HUMIDITIES IN THE
   UPPER SINGLE DIGITS AND LOWER TEENS WILL AFFECT THE LOWER
   VALLEYS...WITH POOR RH RECOVERY OVERNIGHT. GIVEN SEVERE DROUGHT
   CONDITIONS...AN ENHANCED FIRE THREAT WILL EXIST.
   
   ...ERN UT/NWRN CO...
   A COLD FRONT WILL MOVE THROUGH THE AREA BY MID-LATE AFTERNOON
   CAUSING WINDS TO SHIFT FROM THE W TO THE NW...POSING A DANGER TO ANY
   EXISTING FIRES. SUSTAINED WINDS NEAR 20 TO 25 MPH WITH HIGHER GUSTS
   WILL ACCOMPANY THE FRONT AND FOLLOW IT...AND WILL ALIGN WITH
   RELATIVE HUMIDITIES IN THE 20S. DESPITE LOCALLY ENHANCED FIRE
   THREAT...FUEL CONDITIONS AND COOL TEMPERATURES OVERNIGHT IN THE 20S
   AND 30S WILL PRECLUDE A CRITICAL OUTLINE.
   
   ...PORTIONS OF THE NE...
   A COLD FRONT WILL MOVE THROUGH THE AREA THIS MORNING...WITH STRONG
   NWLY WINDS FOLLOWING THE PASSAGE OF THE FRONT. LEAVES THAT HAVE
   FALLEN OR ARE FALLING MAY PROVIDE LOCALLY DRIER FUELS FOR STARTS AS
   THE AREA HAS REMAINED DRY OVER THE PAST FEW DAYS. MARGINAL RELATIVE
   HUMIDITIES IN THE 30S WILL PRECLUDE AN OUTLINE...ALTHOUGH LOCALIZED
   AREAS MAY EXPERIENCE RELATIVE HUMIDITIES IN THE UPPER 20S IN WEAK
   DOWNSLOPING/DRYING.
   
   ...FL PANHANDLE/SUWANNEE VALLEY...
   DRY AIRMASS REMAINS OVER A LARGE PORTION OF THE SE...EVIDENCED IN WV
   IMAGERY AND OBSERVED PWATS. ANOTHER DAY OF CRITICALLY LOW RH WILL
   EXIST OVER THE PANHANDLE AND PORTIONS OF THE SUWANNEE
   VALLEY...ALTHOUGH LIGHT WINDS WILL PRECLUDE A CRITICAL AREA.
   
   ..HURLBUT.. 10/21/2008
   
   ...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 210754
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0254 AM CDT TUE OCT 21 2008
   
   VALID 221200Z - 231200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR SRN CA COASTAL AREAS...
   
   ...SYNOPSIS...
   AN UPPER TROUGH WILL EXIT THE NERN STATES...WITH COOL AND DRY NWLY
   FLOW DOMINATING. HIGH PRESSURE WILL BRIEFLY SETTLE OVER THE
   AREA...AND RELATIVE HUMIDITIES IN THE LOWER 20S AND LOWER 30S WILL
   AFFECT A WIDESPREAD REGION FROM INLAND PORTIONS OF THE MID ATLANTIC
   SWD TO INLAND SC/GA...ALTHOUGH WINDS WILL REMAIN LIGHT. THE FL
   PANHANDLE WILL EXPERIENCE A REPRIEVE FROM CRITICALLY LOW RHS AS
   ELY/SELY LOW LEVEL FLOW AROUND THE PERIPHERY OF THE HIGH INCREASES
   MOISTURE.
   
   MEANWHILE...A STRONG UPPER LOW WILL AFFECT THE CNTRL CONUS...AND
   UPPER HIGH PRESSURE WILL BECOME AMPLIFIED OVER THE WEST. HOT AND DRY
   CONDITIONS WILL AFFECT A LARGE PORTION OF THE WEST BENEATH STRONG
   SUBSIDENCE...AND SINGLE DIGIT RHS WILL CONTINUE ACROSS SWRN NM...SRN
   AZ...SRN NV...AND SRN CA WITH LITTLE OVERNIGHT RECOVERY. LOCALLY
   GUSTY NLY WINDS MAY BE POSSIBLE THROUGH THE LOWER CO RIVER
   VALLEY...ALTHOUGH ATTM ARE EXPECTED TO REMAIN BELOW CRITICAL
   THRESHOLDS.
   
   MEANWHILE IN SRN CA...THE PRESSURE GRADIENT WILL BEGIN TO RELAX AS
   SURFACE HIGH PRESSURE SHIFTS EWD INTO THE NRN PLAINS. LOCALLY GUSTY
   WINDS WILL OCCUR IN THE MORNING...ALTHOUGH NOT AS STRONG AS D1.
   
   ...CRITICAL FIRE WEATHER AREA - SRN CA COASTAL AREAS...
   
   PRIMARY CONDITIONS: SANTA ANA WINDS...LOW RH...MODERATE TO SEVERE
   DROUGHT
   
   HOT AND DRY CONDITIONS WILL CONTINUE...WITH CRITICAL CONDITIONS
   MAINLY W OF THE COASTAL RANGES AS DOWNSLOPE WINDS CONTRIBUTE TO
   COMPRESSIONAL HEATING/DRYING. SINGLE DIGIT RHS CAN BE
   EXPECTED...WITH LITTLE OVERNIGHT RECOVERY. AS SURFACE HIGH PRESSURE
   BEGINS TO SHIFT EWD...THE PRESSURE GRADIENT WILL BEGIN TO RELAX OVER
   THE AREA...ALTHOUGH LOCALLY GUSTY WINDS WILL STILL BE LIKELY THROUGH
   FAVORED CANYONS AND PASSES.
   
   ..HURLBUT.. 10/21/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

Fire Weather/Forecast Products/Home