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 070753
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0153 AM CST SAT NOV 07 2009
   
   VALID 071200Z - 081200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A BROAD UPPER LEVEL TROUGH IS FORECAST TO ENTER THE W COAST ON
   SATURDAY...WHILE AN UPPER LEVEL RIDGE AND SURFACE HIGH PRESSURE
   REMAIN POSITIONED OVER THE SERN STATES. MEANWHILE...A BELT OF STRONG
   WLY FLOW ALOFT WILL SPREAD EWD TOWARD THE GREAT BASIN AND THEN ARC
   NEWD INTO ONTARIO. THESE WINDS MAY FAVOR GUSTY CONDITIONS OVER SRN
   WY DURING THE AFTERNOON. FARTHER E...THE SURFACE HIGH OVER THE SERN
   CONUS WILL CONTINUE TO MAINTAIN A DRY LOW LEVEL AIRMASS.
   
   ...SERN STATES...
   AN AXIS OF SURFACE HIGH PRESSURE IS FORECAST TO RESIDE EAST TO WEST
   FROM SC INTO MS. ELY SURFACE WINDS ARE EXPECTED SOUTH OF THE HIGH
   PRESSURE AXIS OVER FAR SRN MS/AL/GA AND FL...TRANSITIONING TO LIGHT
   AND SLY TOWARDS THE N. THE ELY SURFACE WINDS WILL LIKELY BEGIN TO
   TRANSPORT SLIGHTLY HIGHER MOISTURE CONTENT WWD FROM THE
   ATLANTIC...BUT DEWPOINTS FOR LOCATIONS TO THE N OVER CENTRAL/NRN
   MS/AL/GA INTO SC ARE FORECAST TO REMAIN LOW. THIS DRY AIRMASS WILL
   YIELD RH VALUES FALLING THROUGH THE 30S WITH DAYTIME
   HEATING...THOUGH LIGHT WIND SPEEDS BENEATH A MID LEVEL ANTICYCLONE
   WILL PRECLUDE A CRITICAL FIRE WEATHER OUTLOOK FROM BEING ISSUED.
   
   ...SRN WY...
   A LOW LEVEL THERMAL AXIS IS FORECAST TO REDEVELOP NWD INTO WY IN THE
   WAKE OF A FRONT MOVING THROUGH THE CENTRAL PLAINS. AS THE BOUNDARY
   LAYER BECOMES WELL MIXED DURING THE AFTERNOON...MODERATE FLOW ALOFT
   MAY PROMOTE 30-40 KT GUSTS OUT OF THE SW. HOWEVER...RELATIVELY COOL
   TEMPERATURES...MARGINAL RH VALUES /AOA 20 PERCENT/...AND MARGINAL
   FUEL CONDITIONS POINT TOWARD SUB-CRITICAL FIRE WEATHER CONDITIONS.
   
   ..GARNER.. 11/07/2009
   
   ...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 070756
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0156 AM CST SAT NOV 07 2009
   
   VALID 081200Z - 091200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A BROAD UPPER LEVEL TROUGH WILL CONTINUE TO RESIDE ACROSS THE WRN
   HALF OF THE NATION ON SUNDAY. DOWNSTREAM FROM THE TROUGH...A FRONTAL
   BOUNDARY IS FORECAST TO SAG SWD ACROSS THE CENTRAL AND SRN
   PLAINS...WHILE A WARM FRONT LIFTS N INTO THE GREAT LAKES REGION.
   GUSTY WINDS AND MARGINALLY LOW RH VALUES WILL BE POSSIBLE OVER THE
   NRN HIGH PLAINS AS A LOW AMPLITUDE UPPER DISTURBANCE MOVES E ACROSS
   THE REGION. MEANWHILE...A DRY LOW LEVEL AIRMASS LOCATED ALONG THE
   WRN EDGE OF A LARGE SURFACE HIGH WILL BEGIN TO SPREAD NWD ACROSS
   PORTIONS OF WRN NC.
   
   ...ERN MT/WRN ND...
   A LOW AMPLITUDE S/W TROUGH IS FORECAST TO MOVE E ACROSS MT DURING
   SUNDAY. A WELL MIXED BOUNDARY LAYER COMBINED WITH STRENGTHENING FLOW
   ALOFT ASSOCIATED WITH THE PASSING WAVE MAY RESULT IN WINDS GUSTING
   UP TO 30 MPH OVER PORTIONS OF ERN MT/WRN ND. HOWEVER...COOL DAYTIME
   HIGHS AND MARGINAL RH VALUES /GENERALLY AOA 25-30 PERCENT/ DO NOT
   APPEAR TO SUPPORT CRITICAL FIRE WEATHER CONDITIONS AT THIS TIME.
   
   ...WRN NC...
   A BROAD AREA OF SURFACE HIGH PRESSURE IS FORECAST TO REMAIN CENTERED
   OVER THE MID ATLANTIC COAST. THE AIRMASS ASSOCIATED WITH THIS HIGH
   HAS A HISTORY OF SUPPORTING RH VALUES AROUND 30 PERCENT DURING THE
   LAST FEW DAYS...AND MODEL GUIDANCE INDICATES THIS WILL BE POSSIBLE
   ONCE AGAIN ON SUNDAY ACROSS PORTIONS OF WRN NC. WEAK FLOW AT THE
   SURFACE AND ALOFT SHOULD PRECLUDE THE DEVELOPMENT OF CRITICAL FIRE
   WEATHER CONDITIONS DESPITE THE POTENTIAL FOR FAVORABLE SURFACE
   HEATING AND LOW RH VALUES.
   
   ..GARNER.. 11/07/2009
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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