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 101559
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1059 AM CDT FRI SEP 10 2010
   
   VALID 101700Z - 111200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR FAR SERN WY...N CNTRL CO AND SWRN
   NEB PANHANDLE...
   
   NO CHANGES ARE NECESSARY. THE UPPER TROUGH IS LOCATED JUST W OF THE
   CRITICAL AREA AS OF 16Z...AND GIVEN STRONG UPPER FORCING...THIS MAY
   INFLUENCE A FEW LIGHT SHOWERS AS THE TROUGH SLOWLY PROGRESSES
   EWD...AS NOTED RECENTLY AT RAWLINS WY. HOWEVER...ANY ACCUMULATIONS
   WILL BE LIGHT AND LOCALIZED.
   
   ..HURLBUT.. 09/10/2010
   
   .PREV DISCUSSION... /ISSUED 0337 AM CDT FRI SEP 10 2010/
   
   ...SYNOPSIS...
   A LARGE SCALE UPPER TROF CURRENTLY APPROACHING THE CNTRL ROCKIES PER
   08Z WATER VAPOR IMAGERY...WILL CONTINUE TO TRACK E/NEWD INTO THE
   PLAINS BY LATE AFTERNOON/EARLY EVENING. MODERATE DEEP LAYER WLY FLOW
   WILL ACCOMPANY THE PASSAGE OF THE TROF FROM SRN WY TO E CNTRL
   NM...AS WELL FROM S CNTRL KS INTO THE TX PANHANDLE NEAR DEVELOPING
   SFC LOW AND DRYLINE. 
   
   ...FAR SERN WY...N CNTRL CO AND SWRN NEB PANHANDLE...
   THE NAM CONTINUES TO BE THE MORE ROBUST MODEL SOLUTION WITH A 700 MB
   WIND MAX OF 35-40 KT ACROSS SERN WY INTO THE NEB PANHANDLE AT 15Z.
   WHILE THIS MAY BE A LITTLE OVER-DONE...20-30 KT FLOW DOES NOT SEEM
   OUT OF THE QUESTION BASED ON FORECAST MODEL SOUNDING DATA AND
   CURRENT RADAR AND PROFILER DATA. DOWNSLOPE FLOW WILL ENHANCE LOW
   LEVEL WINDS AND PROMOTE DRYING...ESPECIALLY ALONG THE ROCKY MTN
   FOOTHILLS IN N CNTRL CO WHERE ONGOING FIRES WILL BE AFFECTED. EXPECT
   WLY SUSTAINED WINDS AROUND 20 MPH WITH GUSTS AOA 30 MPH THROUGH THE
   AFTERNOON. ONCE THE TROF SHIFTS EWD...RH VALUES ARE EXPECTED TO
   INCREASE AND WHILE WINDS DECREASE FOR THE OVERNIGHT HOURS.
   
   ...E CNTRL NM INTO FAR W TX...
   FORECAST MODELS CONTINUE TO SHOW 25-30 KT OF WLY 700 MB FLOW FROM E
   CNTRL NM INTO FAR W TX. TEMPERATURES WILL WARM INTO THE UPPER
   80S/LOW 90S DURING THE AFTERNOON WITH DEWPOINTS IN THE 20S.
   RESULTING RH VALUES WILL RANGE FROM 10-15 PERCENT. WLY SFC WINDS
   AROUND 15-20 MPH ARE EXPECTED. WHILE WIDESPREAD CRITICAL CONDITIONS
   ARE NOT EXPECTED...SOME AREAS MAY SEE LOCALLY CRITICAL CONDITIONS
   DEVELOP.
   
   ...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 101831
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0131 PM CDT FRI SEP 10 2010
   
   VALID 111200Z - 121200Z
   
   ...NO CRITICAL AREAS...
   
   NO CHANGES ARE NECESSARY.
   
   ..HURLBUT.. 09/10/2010
   
   .PREV DISCUSSION... /ISSUED 0338 AM CDT FRI SEP 10 2010/
   
   ...SYNOPSIS...
   FLAT...MOSTLY ZONAL FLOW WILL DEVELOP ACROSS THE WRN AND CNTRL CONUS
   AS UPPER TROF TRACKS EWD FROM THE PLAINS INTO THE GREAT LAKES DURING
   THE PERIOD. FAST MID/UPPER WLY FLOW WILL AFFECT THE NRN ROCKIES
   WHERE BREEZY CONDITIONS WITH SUSTAINED WINDS AROUND 15 MPH GUSTING
   TO 25 MPH WILL BE POSSIBLE OVER PARTS OF ID...MT AND NRN WY. A
   HIGHLY AMPLIFIED RIDGE WILL AFFECT THE E COAST WHERE DRY CONDITIONS
   WILL PERSIST ACROSS PARTS OF THE MID ATLANTIC INTO NEW ENGLAND BUT
   WIND SPEEDS WILL REMAIN AOB 10 MPH.
   
   ...S CNTRL WY INTO N CNTRL CO...
   WHILE MAIN AREA OF STRONG MID AND UPPER LEVEL FLOW WILL REMAIN OVER
   THE NRN ROCKIES...AROUND 20-30 KT 700 MB FLOW IS INDICATED BY
   FORECAST MODELS OVER THE CNTRL ROCKIES. EXPECT WLY SUSTAINED SFC
   WINDS AROUND 15 MPH WITH GUSTS TO 25 MPH NEAR THE LARAMIE AND SOUTH
   CNTRL MTNS OF WY. FURTHER S ACROSS N CNTRL CO...SFC WIND SPEEDS WILL
   BE LIGHTER AND MAY HAVE MORE OF AN ELY COMPONENT E OF THE FRONT
   RANGE. IN THE FOOTHILLS...DOWNSLOPE FLOW MAY HAVE MORE OF A LOCAL
   AFFECT AS DEEP LAYER FLOW OVER THE MOUNTAINS REMAINS WLY. AFTERNOON
   TEMPS WILL WARM INTO THE MID/UPPER 70S WITH RH VALUES FALLING TO
   AROUND 10 PERCENT. WHILE SUSTAINED WINDS WILL GENERALLY REMAIN BELOW
   10 MPH...GUSTS AROUND 20 MPH WILL BE POSSIBLE.
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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