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 290831
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0331 AM CDT WED JUL 29 2009
   
   VALID 291200Z - 301200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A BROAD UPPER-LEVEL TROUGH WILL PERSIST ACROSS S-CNTRL
   CANADA/N-CNTRL CONUS. A WEAK MID-LEVEL IMPULSE OVER CNTRL CA
   EMBEDDED WITHIN A LARGER-SCALE UPPER-LEVEL RIDGE AXIS WILL DRIFT
   SLOWLY SEWD TOWARDS NWRN AZ BY EARLY THU.
   
   ...S-CNTRL ORE/N-CNTRL CA SEWD TO THE LEE OF THE SIERRAS AND
   WRN/CNTRL NV...
   ISOLATED TO SCATTERED TSTMS SHOULD DEVELOP DURING THE MID TO LATE
   AFTERNOON ACROSS HIGHER TERRAIN IN ASSOCIATION WITH A MID-LEVEL
   IMPULSE OVER CNTRL CA AND LINGERING DEFORMATION AXIS EXTENDING NWD.
   WITH RH VALUES DROPPING TO AROUND 10 TO 15 PERCENT...MODIFIED
   GFS/NAM FORECAST SOUNDINGS SUGGEST TSTMS WOULD INITIALLY BE RATHER
   HIGH-BASED WITH A 10000 TO 14000 FT MIXED-LAYER LCL COMMON.
   NEVERTHELESS...VERY WEAK SHEAR IN THE CLOUD-BEARING LAYER WILL LIMIT
   DRY TSTM COVERAGE AND SHOULD ALLOW FOR SOME WETTING RAINFALL AS
   ACTIVITY PERSISTS INTO EARLY EVENING.
   
   ...NEAR COASTAL PORTIONS OF S TX...
   SUSTAINED SURFACE WINDS AOA 20 MPH WILL BE PREVALENT MUCH OF THE
   DAY...GENERALLY ALONG AND EAST OF A VCT TO ALI TO MFE LINE. EVEN
   WITH DAYTIME MIXING AND TEMPERATURES WARMING BACK INTO THE MIDDLE
   90S TO NEAR 100...RH VALUES SHOULD LARGELY HOLD AOA 35 PERCENT.
   
   ..GRAMS.. 07/29/2009
   
   ...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 290930
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0430 AM CDT WED JUL 29 2009
   
   VALID 301200Z - 311200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   BROAD UPPER-LEVEL TROUGH WILL REMAIN CENTERED OVER S-CNTRL
   CANADA/N-CNTRL CONUS WITH SEVERAL EMBEDDED SHORT WAVE IMPULSES. AN
   UPPER-LEVEL RIDGE WILL STAY ANCHORED ALONG THE WEST COAST...WHILE A
   VIGOROUS SHORT WAVE TROUGH APPROACHES FROM THE NERN PACIFIC.
   
   ...ORE/CA ALONG AND E OF THE CASCADE/SIERRA RANGES INTO WRN/CNTRL
   NV...
   DESPITE THE CLOSE PROXIMITY OF AN UPPER-LEVEL RIDGE AXIS...TSTMS
   WILL AGAIN FORM OVER HIGHER TERRAIN AS SUFFICIENT MOISTURE LINGERS.
   ALTHOUGH STORMS WILL BE HIGH-BASED AS SURFACE RH VALUES BECOME
   CRITICALLY LOW...MODEST MID/UPPER-LEVEL W/NWLYS AND THE LACK OF
   LARGER-SCALE FORCED ASCENT SUGGEST DRY TSTM COVERAGE SHOULD BE
   ISOLATED.
   
   ...NEAR COASTAL PORTIONS OF S TX...
   WEATHER CONDITIONS ON THU WILL LIKELY BE QUITE SIMILAR TO WED.
   SUSTAINED SURFACE WINDS AOA 20 MPH SHOULD BE PREVALENT MUCH OF THE
   DAY...GENERALLY ALONG AND EAST OF A VCT TO ALI TO MFE LINE. EVEN
   WITH DAYTIME MIXING AND TEMPERATURES WARMING BACK INTO THE MIDDLE
   90S TO NEAR 100...RH VALUES SHOULD LARGELY HOLD AOA 35 PERCENT.
   
   ..GRAMS.. 07/29/2009
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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