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 120940
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0440 AM CDT SUN AUG 12 2007
   
   VALID 121200Z - 131200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR A LARGE PORTION OF THE GREAT
   BASIN/NRN ROCKIES...
   
   ...SYNOPSIS...
   A BROAD UPPER RIDGE WILL REMAIN CENTERED OVER THE CENTRAL STATES
   TODAY WHILE BUILDING IN STRENGTH. THIS RIDGE WILL SUPPORT ABOVE
   NORMAL TEMPERATURES OVER MUCH OF THE NATION. ON THE WRN PERIPHERY OF
   THIS UPPER RIDGE...MID LEVEL SWLY FLOW WILL INCREASE AS AN UPPER
   TROUGH OVER THE GULF OF ALASKA DEEPENS AND DRIFTS SWD. THE
   INCREASING GRADIENT BETWEEN THIS TROUGH AND THE BUILDING
   RIDGE...WILL RESULT IN INCREASING SFC WINDS OVER A PORTION OF THE
   WRN STATES. COMBINED WITH LOW RH READINGS...A CRITICAL FIRE WEATHER
   THREAT WILL EXIST OVER A LARGE PORTION OF THE GREAT BASIN/NRN
   ROCKIES. OVER THE REMAINDER OF THE CONUS...TEMPERATURES WILL AVERAGE
   OVER 100 DEG F ACROSS MUCH OF THE SERN STATES. DRIER LOW LEVEL AIR
   ASSOCIATED WITH A SFC HIGH PRESSURE AREA OVER THE OHIO VALLEY WILL
   COMBINE WITH THE VERY WARM TEMPERATURES TO SUPPORT MIN RH READINGS
   AROUND 25 PERCENT. LONG TERM DROUGHT IN THIS REGION WILL COMBINE
   WITH THESE WEATHER CONDITIONS TO SUPPORT VERY HIGH FIRE DANGER.
   
   ...CRITICAL FIRE WEATHER AREA - A LARGE PORTION OF THE GREAT
   BASIN/NRN ROCKIES...
   
   PRIMARY CONDITIONS: SUSTAINED SWLY WINDS FROM 15-25 MPH WITH MIN RH
   READINGS FROM 10-15 PERCENT...LONG TERM DROUGHT
   
   A LARGE AREA OF CRITICAL FIRE WEATHER CONDITIONS IS EXPECTED TODAY
   WHERE MID LEVEL WINDS WILL INCREASE AHEAD OF AN UPPER TROUGH LOCATED
   OFF THE BRITISH COLUMBIA COAST. COMBINED WITH STEEP LAPSE RATES AND
   A DEEPENING AREA OF LOW PRESSURE OVER THE NRN ROCKIES...MODERATE SFC
   WINDS WILL DEVELOP OVER THE REGION. SUSTAINED WINDS FROM 15-20 MPH
   WILL BE COMMONPLACE OVER LOWER ELEVATIONS...WITH 20-25 MPH SUSTAINED
   WINDS AND GUSTS OVER 30 MPH EXPECTED OVER HIGHER ELEVATIONS. WARM
   TEMPERATURES AND LOW DEWPTS WILL PRODUCE MIN RH READINGS FROM 10-15
   PERCENT LEADING TO CRITICAL FIRE WEATHER CONDITIONS. WINDS WILL
   DIMINISH THIS EVENING WITH LOSS OF HEATING. ISOLATED DRY TSTMS WILL
   ALSO BE LIKELY OVER THE ERN GREAT BASIN TODAY WHERE MID LEVEL
   MOISTURE LIFTS NWD ALONG THE WRN EDGE OF THE BROAD UPPER RIDGE ABOVE
   VERY DRY LOW LEVELS...BUT LACK OF A STRONGER MID LEVEL FORCING
   MECHANISM SHOULD PRECLUDE GREATER TSTM COVERAGE AND A SEPARATE
   CRITICAL DRY TSTM AREA.
   
   ...SERN STATES...
   AFTERNOON TEMPERATURES FROM 100-105 DEG F COMBINED WITH DRY LOW
   LEVELS /DWPTS IN THE 50S/ MOVING SWD FROM THE OHIO VALLEY WILL
   SUPPORT MIN RH READINGS FROM 20-25 PERCENT. ENOUGH OF A PRESSURE
   GRADIENT WILL BE PRESENT THAT NLY WINDS FROM 10-15 MPH ARE EXPECTED
   THIS AFTERNOON. GIVEN A LONG TERM DROUGHT OVER MUCH OF THE
   REGION...THESE WEATHER CONDITIONS WILL SUPPORT NEAR CRITICAL FIRE
   WEATHER CONDITIONS.
   
   ..CROSBIE.. 08/12/2007
   
   ...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 120942
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0442 AM CDT SUN AUG 12 2007
   
   VALID 131200Z - 141200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   AN UPPER RIDGE WILL BUILD NWD THROUGH THE CENTRAL/WRN CONUS
   TOMORROW. MEANWHILE...UPPER TROUGHING WILL SLOWLY SHIFT SWD OFF THE
   PAC NW COAST. WEAKER MID LEVEL WIND FIELDS OVER THE WRN STATES
   SHOULD SUPPORT WEAKER SFC WINDS AND LIMIT THE POTENTIAL FOR CRITICAL
   FIRE WEATHER CONDITIONS OVER THE GREAT BASIN/ROCKIES. ANOTHER DAY OF
   ISOLATED DRY TSTMS WILL BE POSSIBLE AGAIN OVER THE ERN GREAT
   BASIN...WITH THE POTENTIAL FOR DRY TSTMS SPREADING NWD INTO THE NRN
   ROCKIES. WITH A LACK OF GREATER FORCING...TSTM COVERAGE SHOULD
   REMAIN RELATIVELY ISOLATED AND PRECLUDE A CRITICAL DRY TSTM THREAT.
   VERY WARM TEMPERATURES WILL CONTINUE OVER THE CENTRAL/SERN CONUS
   WITH AFTERNOON READINGS NEAR/ABOVE 100 F FROM THE CAROLINAS WWD TO
   TX THEN NWD INTO SD. GUSTY SLY WINDS WILL SUPPORT HIGH FIRE DANGER
   OVER PORTIONS OF THE HIGH PLAINS WHICH HAVE SEEN A RECENT DRY SPELL.
   
   ...ERN GREAT BASIN/NRN ROCKIES...
   SUSTAINED SWLY WINDS WILL AVERAGE AROUND 15 MPH DURING THE AFTERNOON
   WITH LOCALLY HIGHER GUSTS. MID LEVEL MOISTURE WILL CONTINUE TO MOVE
   NWD AROUND THE CENTRAL CONUS UPPER RIDGE. SOME OF THIS MOISTURE WILL
   EXIST ABOVE VERY DRY LOW LEVELS TO SUPPORT ISOLATED DRY TSTMS OVER
   THE ERN GREAT BASIN. THIS ACTIVITY WILL DEVELOP NWD INTO PORTIONS OF
   THE NRN ROCKIES /ERN ID...WRN WY AND SWRN MT/ LATE IN THE PERIOD.
   LACK OF GREATER FORCING IN THE FORM OF A DEFINITIVE SHORT WAVE
   TROUGH SHOULD PRECLUDE GREATER TSTM COVERAGE.
   
   ...CENTRAL/SRN HIGH PLAINS...
   AFTERNOON HIGH TEMPERATURES FROM 100-105 F WILL BE WIDESPREAD
   TOMORROW OVER MOST OF SD...NEB...ERN CO...KS AND THE TX/OK
   PANHANDLES. RELATIVELY DRY LOW LEVELS WILL SUPPORT MIN RH READINGS
   FROM 15-25 PERCENT. A MODEST PRESSURE GRADIENT ASSOCIATED WITH A LOW
   PRESSURE OVER THE DAKOTAS COMBINED WITH MIXING OF LOW LEVEL JET
   WINDS TO THE SFC WILL SUPPORT WIND GUSTS OVER 20 MPH. DESPITE
   LIMITED SFC WINDS...VERY HIGH FIRE DANGER WILL EXIST AS A RESULT OF
   THE ABOVE NORMAL TEMPERATURES/LOW READINGS AND RECENT DRY SPELL OVER
   THE REGION.
   
   ..CROSBIE.. 08/12/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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