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 130922
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0422 AM CDT FRI JUL 13 2007
   
   VALID 131200Z - 141200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR WA/ORE/ID/WRN MT/NERN NV/NRN
   UT/WRN WY...
   
   ...SYNOPSIS...
   EARLY MORNING WATER VAPOR LOOPS SHOW AN INITIAL WAVE ASSOCIATED WITH
   ERN PACIFIC TROUGH MOVING THROUGH NRN CA/WRN ORE. UPPER PATTERN WILL
   CHANGE LITTLE OVER THE NEXT DAY AS ERN PACIFIC TROUGH WILL MAKE
   LITTLE EWD PROGRESS. SMALLER SCALE IMPULSES...HOWEVER...WILL MOVE
   AROUND THE TROUGH...INCREASING THE CHANCE FOR TSTMS ACROSS THE
   PACIFIC NORTHWEST/NRN ROCKIES TODAY. FARTHER EAST...HIGH PRESSURE
   WILL REMAIN ANCHORED ACROSS THE ERN GREAT BASIN MAINTAINING ABOVE
   NORMAL TEMPERATURES OVER MUCH OF THE WEST. CRITICAL FIRE CONDITIONS
   ARE LIKELY TODAY ACROSS THE PACIFIC NORTHWEST AND NRN ROCKIES DUE TO
   POTENTIAL FOR SCATTERED DRY TSTMS.
   
   ...CRITICAL FIRE WEATHER AREA - WA/ORE/ID/WRN MT/NERN NV/NRN UT/WRN
   WY...
   
   PRIMARY CONDITIONS: SCATTERED DRY TSTMS/MIN RH VALUES BELOW 15-25
   PERCENT/CRITICALLY DRY FUELS/ABOVE NORMAL TEMPS
   
   LARGE SCALE ASCENT ASSOCIATED WITH INITIAL ERN PACIFIC IMPULSE IS
   SUPPORTING EARLY MORNING TSTMS ACROSS WRN WA. AS THIS FIRST
   SHORTWAVE AFFECTS THE PACIFIC NORTHWEST TODAY...MORE TSTMS WILL
   DEVELOP THIS AFTN ACROSS PORTIONS OF WA/ORE/ID AND WRN MT DUE TO
   INCREASED LARGE SCALE ASCENT WITHIN AN UNSTABLE AIRMASS. SOME OF
   THESE STORMS WILL CONTAIN LITTLE RAINFALL...AND THUS POSE A
   SIGNIFICANT THREAT FOR NEW IGNITIONS AS WELL AS TO ONGOING
   FIREFIGHTING OPERATIONS. EXPERIMENTAL GUIDANCE FROM THE NCEP SREF
   SUGGESTS THE HIGHEST PROBABILITY FOR DRY TSTMS WILL EXTEND ALONG THE
   ERN SLOPES OF THE CASCADES IN WA/ORE INCLUDING THE HIGHER ELEVATION
   IN NERN ORE. FORECAST SOUNDINGS FROM BURNS ORE TO SPOKANE WA SHOW
   ENVIRONMENT THAT IS DEEPLY MIXED BY AFTN...WITH TEMP/DEWPOINT
   DEPRESSION VALUES AROUND 50-60 DEGREES. IN ADDITION TO THE THREAT OF
   LIGHTNING...GUSTY OUTFLOW WINDS WILL BE LIKELY NEAR STORMS.
   
   ..TAYLOR.. 07/13/2007
   
   ...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 130956
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0456 AM CDT FRI JUL 13 2007
   
   VALID 141200Z - 151200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR ERN WA/NE ORE/ID/WRN MT/WRN WY...
   
   ...SYNOPSIS...
   ERN PACIFIC TROUGH...WHICH HAS BEEN SLOW TO MOVE INLAND THUS
   FAR...IS EXPECTED TO MAKE SOME EWD PROGRESS ON SATURDAY. ASSOCIATED
   MID/UPPER LEVEL JETS WILL MOVE ONSHORE DURING THE PERIOD...WITH
   STRONG SWLY FLOW ACROSS WA/ORE BY SAT EVENING. LARGE HIGH PRESSURE
   RIDGE WILL REMAIN FAIRLY STATIONARY ACROSS THE ERN GREAT BASIN WITH
   LARGE SCALE TROUGH PERSISTING ACROSS THE NERN CONUS. MAIN FIRE
   WEATHER THREAT ON SATURDAY WILL BE FROM SCATTERED TSTMS ACROSS THE
   NRN ROCKIES...SOME OF WHICH MAY CONTAIN DRY LIGHTNING STRIKES.
   
   ...CRITICAL FIRE WEATHER AREA - ERN WA/NE ORE/ID/WRN MT/WRN WY...
   
   PRIMARY CONDITIONS: SCATTERED DRY TSTMS/MIN RH VALUES BELOW 20
   PERCENT/CRITICALLY DRY FUELS/ABOVE NORMAL TEMPS
   
   MAX TEMPERATURES ARE AGAIN FORECAST TO BE IN THE 90S OR LOWER 100S
   ACROSS ERN WA/ERN ORE AND ID/WRN MT WITH MIN HUMIDITY VALUES BELOW
   15-20 PERCENT. MID LEVEL MOISTURE COMBINED WITH INCREASING LARGE
   SCALE LIFT WILL PROVIDE THE SUPPORT FOR SCATTERED TSTMS FROM NERN WA
   THROUGH PORTIONS OF ID/WRN MT. FORECAST SOUNDINGS SUGGEST THAT
   ALTHOUGH PW VALUES WILL BE INCREASING...THERE WILL BE LARGE
   TEMP/DEWPOINT SPREADS ON THE ORDER OF 50+ DEGREES...SUGGESTING THAT
   MANY STORMS MAY CONTAIN LITTLE RAIN. EVEN WITH STORMS THAT DO
   CONTAIN WETTING RAINS...ANY LIGHTNING POSES A THREAT TO ONGOING
   FIREFIGHTING OPERATIONS AS WELL AS NEW IGNITIONS GIVEN CRITICALLY
   DRY FUELS.
   
   ..TAYLOR.. 07/13/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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