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 200814
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0314 AM CDT FRI APR 20 2007
   
   VALID 201200Z - 211200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR ERN AZ/NRN AND WRN NM/SERN
   UT/EXTREME SWRN CO...
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF NRN FL...
   
   ...SYNOPSIS...
   HIGHLY AMPLIFIED UPPER-LEVEL PATTERN WILL CONTINUE ACROSS THE CONUS
   WITH A WRN MEAN TROUGH AND RIDGING CENTERED OVER THE MS RIVER
   VALLEY. POTENT MID-LEVEL LOW JUST OFF THE CNTRL CA COAST PER WATER
   VAPOR IMAGERY...WILL DIG SEWD ACROSS SRN CA/NRN BAJA TODAY...THEN
   PIVOT EWD INTO SRN AZ BY 21/12Z. BROAD ZONE OF MODERATELY STRONG
   MID-LEVEL FLOW WILL SPREAD EWD TO THE FOUR CORNERS REGION THIS
   AFTERNOON. IN THE SOUTHEAST...A WEAK COLD FRONT WILL PUSH SWD ACROSS
   THE FL PENINSULA.
   
   ...CRITICAL FIRE WEATHER AREA - ERN AZ/NRN AND WRN NM/SERN
   UT/EXTREME SWRN CO...
   
   PRIMARY CONDITIONS: STRONG WINDS / LOW RH / RECENT DRYNESS
   
   WINDS WILL INCREASE ACROSS THE FOUR CORNERS/SRN ROCKIES AS 50+ MPH
   SWLY FLOW AT 500 MB OVERSPREADS MUCH OF THE AREA TODAY. AS LOW-LEVEL
   LAPSE RATES STEEPEN...SUSTAINED SURFACE WINDS OF 20 TO 30 MPH WILL
   BECOME WIDESPREAD DURING THE MID-LATE AFTERNOON. TEMPERATURES WILL
   BE WARMER COMPARED TO THURSDAY...FROM THE MID 60S TO MID 80S. WITH
   AN ANTECEDENT DRY AIR MASS IN PLACE /CURRENT GPS PRECIPITABLE WATER
   VALUES AOB 0.25 INCHES/...CRITICALLY LOW RH VALUES SHOULD DEVELOP BY
   NOON. SEVERAL HOURS OF RH FROM 8 TO 15 PERCENT WILL LIKELY OCCUR. W
   OF THE CONTINENTAL DIVIDE...INCREASING UPPER-LEVEL DIFFLUENCE AND
   DIFFERENTIAL CYCLONE VORTICITY ADVECTION IN THE LATE
   AFTERNOON/EVENING WILL ENHANCE UPWARD VERTICAL MOTION. THIS WILL
   LEAD TO BOUNDARY LAYER MOISTENING AND IMPROVING SURFACE RH
   CONDITIONS WITH POSSIBLE SHOWERS OVERNIGHT.
   
   ...CRITICAL FIRE WEATHER AREA - PORTIONS OF NRN FL...
   
   PRIMARY CONDITIONS: LOW RH / LONG-TERM DROUGHT / MODERATE WINDS
   
   NELY WINDS WILL OVERSPREAD NRN FL AFTER THE PASSAGE OF A WEAK COLD
   FRONT THIS MORNING. LATEST MODEL GUIDANCE CONTINUES TO INDICATE A
   SUBTLE INCREASE IN THE SURFACE PRESSURE GRADIENT BEHIND THE
   BOUNDARY. IT APPEARS THAT SUSTAINED WINDS AROUND 15 MPH WILL OCCUR.
   AFTERNOON TEMPERATURES WILL BE SLIGHTLY COOLER COMPARED TO
   THURSDAY...IN THE MID TO UPPER 70S. HOWEVER...RH VALUES OF 25 TO 35
   PERCENT WILL LIKELY DEVELOP ONCE AGAIN ACROSS THE PANHANDLE EWD INTO
   PORTIONS OF NRN FL AWAY FROM THE ATLANTIC COAST.
   
   ...SERN NM/FAR W TX...
   WARM AND DRY CONDITIONS WILL CONTINUE WITH TEMPERATURES GENERALLY IN
   THE 80S AND RH VALUES FROM 6 TO 12 PERCENT THIS AFTERNOON.
   HOWEVER...MID-LEVEL FLOW WILL NOT BE AS STRONG AS AREAS FARTHER N
   AND W. EVEN WITH A VERY DEEPLY MIXED BOUNDARY LAYER...WINDS ARE ONLY
   EXPECTED TO REACH 15 TO 20 MPH.
   
   ...NWRN AZ...
   ALTHOUGH RH RECOVERY HAS BEEN POOR THIS MORNING...FORCED ASCENT
   AHEAD OF CNTRL CA LOW WILL INCREASE MID/UPPER-LEVEL CLOUD COVERAGE
   THIS MORNING...HELPING TO RETARD DAYTIME HEATING. IN ADDITION...SLY
   LOW-LEVEL FLOW UP THE LOWER CO RIVER VALLEY WILL LEAD TO INCREASING
   BOUNDARY LAYER MOISTURE. A PERIOD OF WINDS NEAR 20 MPH AND RH AROUND
   15 PERCENT MAY BRIEFLY DEVELOP.
   
   ..GRAMS.. 04/20/2007
   
   ...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 200948
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0448 AM CDT FRI APR 20 2007
   
   VALID 211200Z - 221200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR SRN THROUGH E-CNTRL NM/PORTIONS OF
   SWRN TX...
   
   ...SYNOPSIS...
   A POTENT MID-LEVEL SHORT WAVE TROUGH WILL MOVE EWD FROM SRN AZ
   ACROSS THE SRN ROCKIES...THEN EJECT NEWD AND BECOME NEGATIVELY
   TILTED ACROSS THE CNTRL PLAINS EARLY SUN. BELT OF INTENSE MID-LEVEL
   FLOW ON THE SRN PERIPHERY OF WAVE...SHOULD MOVE ACROSS SRN NM ON SAT
   AFTERNOON. DOWNSTREAM LEE CYCLONE WILL BECOME CENTERED OVER ERN
   CO...WITH ATTENDANT DRY LINE DRAPED SWD ALONG THE FAR WRN TX
   PANHANDLE INTO SWRN TX. A COLD FRONT WILL PUSH E OF THE SRN ROCKIES
   AND ACCELERATE EWD AS IT APPROACHES THE DRY LINE IN THE LATE
   AFTERNOON. IN THE EAST...A LARGE AREA OF SURFACE HIGH PRESSURE WILL
   MOVE SLOWLY SEWD FROM THE UPPER OH VALLEY TO THE CAROLINAS.
   
   ...CRITICAL FIRE WEATHER AREA - SRN THROUGH E-CNTRL NM/PORTIONS OF
   SWRN TX...
   
   PRIMARY CONDITIONS: VERY GUSTY WINDS / LOW RH / RECENT DRYNESS
   
   CORRIDOR OF STRONG SWLY WINDS WILL DEVELOP AROUND 21/18Z BETWEEN
   APPROACHING COLD FRONT AND SHARP DRY LINE MIXING E INVOF THE ERN
   NM/WRN TX N-S BORDER. SUSTAINED WINDS FROM 25 TO 35 MPH APPEAR
   LIKELY ACROSS MUCH OF ERN/SRN NM INTO SW TX. AS COLD FRONT AND UPPER
   LOW AXIS REACH THE ERN NM PLAINS DURING THE LATE
   AFTERNOON...INCREASING SUBSIDENCE AND WLY DOWNSLOPE FLOW WILL
   MAXIMIZE DOWNWARD MOMENTUM TRANSPORT. VERY GUSTY WINDS /POTENTIALLY
   AS HIGH AS 50 TO 60 MPH/ COULD OCCUR. CRITICALLY LOW RH /FROM 10 TO
   15 PERCENT/ WILL BE CONFINED S OF THE UPPER LOW TRACK WHICH IS
   FORECAST TO CROSS NRN NM. THUS...CRITICAL CONDITIONS ARE LIKELY
   ACROSS FAR SRN NM/FAR W TX THROUGH THE E-CNTRL/SERN PLAINS OF NM.
   ALTHOUGH WINDS WILL DIMINISH SOMEWHAT DURING THE EVENING...RATHER
   POOR RH RECOVERY IS EXPECTED OVERNIGHT IN SERN NM/SW TX WHERE
   DOWNSLOPE FLOW WILL CONTINUE.
   
   ...SRN GA/NRN FL...
   LITTLE OVERALL SYNOPTIC CHANGE WILL PROVIDE ANOTHER DAY OF LOW
   AFTERNOON RH /FROM 25 TO 35 PERCENT/ TO THE REGION. WINDS SHOULD BE
   SLIGHTLY WEAKER COMPARED TO FRIDAY...AS HIGH PRESSURE APPROACHES.
   SUSTAINED SPEEDS SHOULD RANGE FROM 10 TO 15 MPH...WITH A GRADUAL
   SHIFT IN WIND DIRECTION FROM THE NE TO E.
   
   ..GRAMS.. 04/20/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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