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 120840
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0340 AM CDT WED SEP 12 2007
   
   VALID 121200Z - 131200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR MUCH OF MT/EASTERN AND CENTRAL
   ID/MUCH OF WY...
   
   ...SYNOPSIS...
   A POTENT UPPER TROUGH/UPPER JET...AND ASSOCIATED STRONG COLD
   FRONT...WILL CROSS THE WESTERN CANADIAN PROVINCES AND NORTHERN
   ROCKIES/NORTHERN PLAINS THROUGH TONIGHT. WINDY CONDITIONS...ALONG
   WITH A COLD FRONT-INDUCED WIND SHIFT...WILL RESULT IN A CRITICAL
   FIRE DANGER ACROSS A LARGE PART OF MT/ID/WY. ELSEWHERE...VERY WARM
   AND DRY CONDITIONS WILL PERSIST ACROSS THE GREAT BASIN INTO SOUTHERN
   CA WHERE SINGLE DIGIT RH VALUES WILL OCCUR THIS AFTERNOON...ALONG
   WITH LOCALLY GUSTY WINDS.
   
   ...CRITICAL FIRE WEATHER AREA - MUCH OF MT/EASTERN AND CENTRAL
   ID/MUCH OF WY...
   
   PRIMARY CONDITIONS: STRONG WINDS/COLD FRONTAL WIND SHIFT AND LOW RH
   
   AS THE UPPER TROUGH CROSSES THE NORTHERN ROCKIES...SURFACE LOW
   PRESSURE WILL DEEPEN RAPIDLY FROM EASTERN MT INTO THE DAKOTAS THIS
   AFTERNOON. THIS WILL DRAG A STRONG COLD FRONT SOUTHEASTWARD ACROSS
   MT/NORTHERN WY THIS AFTERNOON/EARLY EVENING...WHERE A DISTINCT
   NORTHERLY WIND SHIFT IS EXPECTED IN THE WAKE OF THE FRONT. STRONG
   WIND FIELDS ALOFT AND SUFFICIENT MIXING/MOMENTUM TRANSFER SUGGEST
   SUSTAINED WIND SPEEDS OF 20-30 MPH /WITH GUSTS TO 40 MPH/ ARE LIKELY
   ACROSS MUCH OF THE REGION...GENERALLY FROM A WEST-SOUTHWEST
   DIRECTION AHEAD OF THE COLD FRONT...AND NORTH-NORTHWEST BEHIND IT.
   AHEAD OF THE COLD FRONT...WARM TEMPERATURES WILL PREVAIL WITH
   MINIMUM RH VALUES OF 10-20 PERCENT.
   
   ...EASTERN DAKOTAS AND NORTHERN/CENTRAL MN...
   AS SURFACE LOW PRESSURE QUICKLY DEEPENS ACROSS THE DAKOTAS...STRONG
   AND GUSTY WINDS ARE EXPECTED ACROSS A LARGE PART OF THE NORTHERN
   PLAINS AND UPPER MIDWEST THIS AFTERNOON. ALTHOUGH WIDESPREAD
   CRITICAL CONDITIONS ARE NOT ANTICIPATED...SUSTAINED SOUTHERLY WINDS
   OF 20-30 MPH /WITH GUSTS TO 40 MPH/ WILL LEAD TO A HEIGHTENED FIRE
   DANGER IN LOCALLY/RELATIVELY DRIER AREAS OF NORTHERN MN AND THE
   EASTERN DAKOTAS.
   
   ..GUYER.. 09/12/2007
   
   ...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 120959
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0459 AM CDT WED SEP 12 2007
   
   VALID 131200Z - 141200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   UPPER TROUGH IS FORECAST TO DECELERATE/AMPLIFY OVER THE NORTHERN
   PLAINS AND CENTRAL CANADIAN PROVINCES ON THURSDAY...WHILE A
   PERSISTENT UPPER LOW SLOWLY NEARS THE NORTHERN CA/ORE COAST. IN THE
   WAKE OF THE DAY 1 COLD FRONT...HIGH PRESSURE WILL USHER A MUCH
   COOLER AIRMASS SOUTHWARD ACROSS THE NORTHERN ROCKIES/NORTHERN HIGH
   PLAINS. THE EAST-SOUTHEAST ADVANCING COLD FRONT WILL BE THE PRIMARY
   FOCUS FOR SHOWERS/THUNDERSTORMS ACROSS THE UPPER MIDWEST...WITH RAIN
   ALSO COMMON ACROSS MUCH OF THE GULF COAST STATES ON THURSDAY.
   
   ...SOUTHERN WY/FAR EASTERN ID INTO NORTHEAST UT/WESTERN CO...
   STRONG COLD FRONT WILL STALL ACROSS ID/WY ON THURSDAY...WITH THE
   POTENTIAL FOR STRONG WIND GUSTS REMAINING ACROSS MUCH OF SOUTHERN
   WY/FAR EASTERN ID INTO NORTHEAST UT/WESTERN CO AS A POTENT UPPER JET
   REMAINS OVERHEAD. SUSTAINED WIND SPEEDS OF 20-30 MPH /WITH HIGHER
   GUSTS/ ARE LIKELY...ESPECIALLY ACROSS SOUTHERN WY. ALTHOUGH PORTIONS
   OF THE REGION COULD ULTIMATELY WARRANT A CRITICAL UPGRADE...CURRENT
   THINKING IS THAT MARGINAL RH VALUES/FUELS MAY TEMPER THE FIRE
   WEATHER POTENTIAL IN SPITE OF THE STRONG/GUSTY WINDS.
   
   ...CA SIERRA/MUCH OF NV INTO CENTRAL/SOUTHERN UT...
   UPPER LOW IN THE EASTERN PACIFIC WILL SLOWLY MIGRATE EASTWARD TOWARD
   THE NORTHERN CA/ORE COAST ON THURSDAY. THIS WILL REINFORCE A
   MODERATE BELT OF SOUTHWESTERLY FLOW ALOFT ACROSS THE SIERRA
   MOUNTAINS AND GREAT BASIN. ALONG WITH WARM TEMPERATURES AND AT LEAST
   MARGINALLY CRITICAL AFTERNOON RH VALUES...SUSTAINED WIND SPEEDS OF
   15-20 MPH /WITH HIGHER GUSTS/ WILL LEAD TO A HEIGHTENED FIRE DANGER.
   PORTIONS OF THE REGION WILL BE MONITORED FOR A POSSIBLE CRITICAL
   UPGRADE...ESPECIALLY THE LAKE TAHOE VICINITY INTO WESTERN/CENTRAL NV
   WHERE FUELS APPEAR TO BE MOST SUSCEPTIBLE.
   
   ..GUYER.. 09/12/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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