Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

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   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 080805
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0305 AM CDT MON SEP 08 2008
   
   VALID 081200Z - 091200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A WEAK MID-LEVEL IMPULSE OVER NRN CA /PER WATER VAPOR IMAGERY/
   SHOULD REMAIN QUASI-STATIONARY THROUGH THE PERIOD. A SERIES OF
   UPSTREAM SHORT WAVE TROUGHS WILL AMPLIFY SEWD ACROSS BRITISH
   COLUMBIA AND THE PACIFIC NW. THIS WILL LEND TO A BROADER LARGE-SCALE
   TROUGH BECOMING CENTERED ALONG THE W COAST BY 12Z TUE.
   
   ...PORTIONS OF CNTRL AND SRN NV/SWRN UT/FAR NWRN AZ/SRN SIERRA
   MTNS...
   A PREVAILING SLY COMPONENT TO LOW/MID-TROPOSPHERE FLOW /ALBEIT WEAK/
   WILL CONTINUE TO AID IN GRADUAL NWD TRANSPORT OF HIGHER PW VALUES
   FROM THE SOUTHWEST INTO THE SRN GREAT BASIN. ALONG THE NRN PERIPHERY
   OF THIS MOISTENING REGIME...OROGRAPHIC LIFT AND DIURNAL HEATING
   SHOULD PRIMARILY CONTRIBUTE TO ISOLATED TO SCATTERED TSTM
   DEVELOPMENT. SURFACE DEW POINT DEPRESSIONS AROUND 60 TO 70 DEG F
   WILL RESULT IN VERY DEEPLY-MIXED INVERTED-V TYPE THERMODYNAMIC
   PROFILES CONDUCIVE TO GUSTY OUTFLOW WINDS. HOWEVER...LIGHT STEERING
   WINDS AND LIMITED LARGE-SCALE FORCING WILL MITIGATE A MORE ROBUST
   DRY TSTM THREAT.
   
   ..GRAMS.. 09/08/2008
   
   ...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 080948
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0448 AM CDT MON SEP 08 2008
   
   VALID 091200Z - 101200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A BROAD UPPER-LEVEL TROUGH WILL CONTINUE TO EVOLVE ACROSS THE WRN
   CONUS. A LEAD SHORT WAVE TROUGH SHOULD SLOWLY SINK SWD FROM THE
   PACIFIC NW INTO NRN CA/NWRN NV. A MORE VIGOROUS UPSTREAM WAVE WILL
   AMPLIFY FROM BRITISH COLUMBIA INTO THE NRN INTERMOUNTAIN WEST BY
   EARLY WED.
   
   ...NRN NV TO THE UPPER SNAKE RIVER PLAIN OF ID...
   MODEL FORECASTS CONTINUE TO DIFFER WITH THE EXTENT OF STRENGTHENING
   LOW/MID-LEVEL W/SWLYS ON TUE. THIS APPEARS TO BE RELATED TO
   VARIATIONS ON THE EVOLUTION OF A LEAD SHORT WAVE TROUGH MOVING SWD
   ACROSS ORE INTO NRN CA OR NWRN NV. NEVERTHELESS...CONSENSUS WOULD
   DICTATE MODERATE SURFACE WINDS /AROUND 15 TO 20 MPH/ SHOULD DEVELOP
   NEAR PEAK HEATING. THIS WOULD BE CONCURRENT WITH RH VALUES FALLING
   BETWEEN 8 TO 15 PERCENT...RESULTING IN SHORT-DURATION/LOCALIZED
   CRITICAL CONDITIONS.
   
   ...ERN NV/MOST OF UT/FAR SERN ID...
   ISOLATED TO SCATTERED TSTMS SHOULD DEVELOP TUE AFTERNOON AS
   LARGE-SCALE ASCENT GRADUALLY INCREASES DOWNSTREAM OF UPPER-LEVEL
   TROUGH AND AS SUBTROPICAL MOISTURE PLUME IS ENTRAINED NEWD THROUGH
   THE ERN GREAT BASIN. MODEL FORECASTS DO DIFFER WITH THE DEGREE OF
   MOISTENING THAT OCCURS IN THE LOW/MID-LEVELS AND CONSEQUENT EFFECTS
   ON INSOLATION/SURFACE HEATING. HOWEVER...CONSENSUS WOULD SUGGEST
   THAT INCREASING PW VALUES AOA 0.50 IN AND SURFACE RH VALUES
   GENERALLY AOA 15 PERCENT WOULD RESULT IN MIXED WET AND DRY
   TSTMS...GIVEN MODERATE STORM MOTIONS. ATTM...NUMEROUS TO WIDESPREAD
   DRY TSTMS DO NOT APPEAR LIKELY.
   
   ..GRAMS.. 09/08/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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