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 170854
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0354 AM CDT SAT MAY 17 2008
   
   VALID 171200Z - 181200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR A PORTION OF THE NRN PLAINS...
   
   ...SYNOPSIS...
   A BROAD UPPER RIDGE IN THE WEST AND UPPER TROUGH IN THE EAST WILL
   CHARACTERIZE THE UPPER PATTERN ACROSS THE NATION TODAY. A DEEP LAYER
   OF NWLY FLOW IN THE LOW-MID LEVELS AND STEEP LAPSE RATES WILL
   SUPPORT MODERATE NW SFC WINDS OVER THE DAKOTAS. A COMBINATION OF
   THESE WINDS AND LOW RH READINGS WILL LEAD TO CRITICAL FIRE WEATHER
   CONDITIONS OVER THIS REGION TODAY. ELSEWHERE...DESPITE LOW RH
   READINGS SUPPORTED BY NEAR RECORD HIGH TEMPERATURES OVER MUCH OF THE
   GREAT BASIN....PAC NW AND INTERIOR CA...LIGHT WINDS WILL PRECLUDE
   CRITICAL FIRE WEATHER CONCERNS.
   
   ...CRITICAL FIRE WEATHER AREA - MUCH OF ND/NRN SD...
   
   PRIMARY CONDITIONS: SUSTAINED NWLY WINDS FROM 20-25 MPH...MIN RH
   READINGS FROM 15-25 PERCENT...LONG TERM DROUGHT
   
   A DEEP LAYER OF NW FLOW ALOFT COMBINED WITH A MODERATE PRESSURE
   GRADIENT AND STEEP MID LEVEL LAPSE RATES WILL SUPPORT SUSTAINED NWLY
   WINDS FROM 20-25 MPH DURING THE LATE MORNING/AFTERNOON. ALTHOUGH
   TEMPERATURES WILL AVERAGE NEAR NORMAL /UPPER 60S AND LOWER 70S/ DRY
   AIR WITH DEWPTS IN THE 20S WILL SUPPORT MIN RH READINGS FROM 15-25
   PERCENT.
   
   ..CROSBIE.. 05/17/2008
   
   ...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 170909
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0409 AM CDT SAT MAY 17 2008
   
   VALID 181200Z - 191200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR CENTRAL/ERN MT...
   
   ...SYNOPSIS...
   AN UPPER RIDGE OVER THE PAC NW/NRN ROCKIES WILL BEGIN TO BREAK DOWN
   TOMORROW AS AN UPPER TROUGH MOVES THROUGH B.C CANADA. IN
   RESPONSE...MODERATE WNWLY WINDS WILL DEVELOP OVER THE NRN
   ROCKIES/NRN HIGH PLAINS. WHERE ANTECEDENT CONDITIONS AND RH READINGS
   ARE DRY...CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP. ELSEWHERE
   ACROSS THE NATION...WELL ABOVE NORMAL TEMPERATURES UNDER THE
   PRESENCE OF UPPER RIDGING WILL RESULT IN ANOTHER DAY OF LOW RH
   READINGS OVER THE GREAT BASIN/CALIFORNIA AND MUCH OF THE SWRN
   STATES. GENERALLY LIGHT/TERRAIN DRIVEN WINDS WILL PRECLUDE ANY
   CRITICAL FIRE WEATHER THREAT IN THESE REGIONS. AS THE UPPER RIDGE
   BEGINS TO BREAK DOWN AND SHIFT EWD INTO THE SRN/CENTRAL PLAINS...A
   WARMING TREND WILL ENSUE IN THIS REGION.
   
   ...CRITICAL FIRE WEATHER AREA - MUCH OF CENTRAL/ERN MT...
   
   PRIMARY CONDITIONS: SUSTAINED WLY WINDS FROM 20-30 MPH WITH GUSTS
   OVER 35 MPH...MIN RH READINGS FROM 15-20 PERCENT
   
   AS THE UPPER RIDGE BREAKDOWN OVER THE NRN ROCKIES...THE COMBINATION
   OF STRONG MID LEVEL WINDS...STEEP LOW LEVEL LAPSE RATES AND MODERATE
   PRESSURE GRADIENT BETWEEN SFC LEE TROUGH OVER WRN ND AND HIGH
   PRESSURE OVER THE COLUMBIA BASIN WILL SUPPORT MODERATE WLY WINDS
   TOMORROW OVER MUCH OF CENTRAL/ERN MT. WELL ABOVE NORMAL /NEAR
   RECORD/ TEMPERATURES IN THE 80S/LOWER 90S WILL COMBINE WITH LOW
   DEWPTS TO PRODUCE MIN RH READINGS FROM 15-20 PERCENT. THE
   COMBINATION OF THESE PARAMETERS WILL SUPPORT CRITICAL FIRE WEATHER
   CONDITIONS. WINDS.
   
   IN ADDITION...SUFFICIENT LIFT ASSOCIATED WITH WEAK DISTURBANCES IN
   THE NWLY FLOW OVER THE REGION MAY ALSO SUPPORT ISOLATED TSTMS OVER
   ERN MT DURING THE AFTERNOON HRS. FORECAST SOUNDINGS INDICATE HIGH
   CLOUD BASES. AND GIVEN THE FAIRLY PROGRESSIVE NATURE OF THE STORM
   MOTIONS...A FEW DRY TSTMS ARE POSSIBLE.
   
   ..CROSBIE.. 05/17/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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