Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 270852
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0352 AM CDT SAT AUG 27 2005
   
   VALID 271200Z - 281200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   BROAD UPPER RIDGING WILL OCCUR OVER THE WRN STATES IN ADVANCE OF A
   STRONG UPPER TROUGH THAT WILL APPROACH THE PAC NW COAST LATE IN THE
   PERIOD. ABOVE NORMAL TEMPERATURES AND LOW RH READINGS BELOW 15
   PERCENT WILL BE THE RESULT OVER MOST OF THE WEST. HOWEVER...
   SUSTAINED WINDS ARE EXPECTED TO BE AOB 15 MPH PRECLUDING A CRITICAL
   FIRE WEATHER THREAT. THE ONLY EXCEPTION TO RELATIVELY WEAK WINDS
   WILL BE OVER THE COLUMBIA RIVER BASIN OF ERN ORE/WA...WHERE
   SUSTAINED WINDS MAY INCREASE TO AROUND 25 MPH FOR A FEW HR PERIOD
   LATER THIS AFTERNOON.
   
   ...COLUMBIA RIVER BASIN OF ERN ORE/WA...
   A MODERATE SFC ONSHORE FLOW WILL CONTINUE TODAY OVER WRN ORE/WA
   AHEAD OF DEEPENING UPPER TROUGH OFF THE COAST. WITH A THERMAL SFC
   TROUGH REMAINING OVER FAR ERN ORE/WA....A MODERATE SFC
   PRESSURE/THERMAL GRADIENT WILL REMAIN BETWEEN THIS SFC TROUGH AND
   SFC HIGH PRESSURE OFF THE ORE COAST. THE RESULT WILL BE AT LEAST
   SEVERAL HRS OF MODERATE WLY WINDS IN THE COLUMBIA RIVER BASIN.
   SLIGHTLY COOLER AIR IS EXPECTED TODAY THAN YESTERDAY AS THE ONSHORE
   FLOW WILL BE DEEPER THAN YESTERDAY. THEREFORE...A CRITICAL FIRE
   WEATHER THREAT IS NOT ANTICIPATED DESPITE THE MODERATE WINDS AS MIN
   RH READINGS WILL AVERAGE BETWEEN 20 AND 25 PERCENT.
   
   ..CROSBIE.. 08/27/2005
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 270854
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0354 AM CDT SAT AUG 27 2005
   
   VALID 281200Z - 291200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR A PORTION OF THE NWRN GREAT
   BASIN/ERN SLOPES OF THE NRN SIERRA/CASCADES MTNS...
   
   ...SYNOPSIS...
   A STRONG UPPER TROUGH WILL MOVE INTO THE PAC NW THROUGH THE PERIOD.
   AN ASSOCIATED COLD FRONT WILL MOVE THROUGH WRN ORE/WA DURING THE
   DAYTIME HRS...AND ACROSS MOST OF ERN ORE/WA DURING THE OVERNIGHT
   HOURS. AHEAD OF THIS FRONT MODERATE SFC WINDS WILL DEVELOP DURING
   THE PERIOD. COMBINED WITH LOW RH READINGS...A CRITICAL FIRE WEATHER
   THREAT WILL EXIST ACROSS THE NWRN GREAT BASIN. OTHERWISE...THE
   PRESENCE OF A BUILDING UPPER RIDGE WILL SUPPORT CONTINUED ABOVE
   NORMAL TEMPERATURES...LOW RH READINGS AND LIGHT WINDS ACROSS MOST OF
   THE REMAINDER OF THE WEST.
   
   ...CRITICAL FIRE WEATHER AREA 1 - NERN CA...NWRN NV...ERN ORE AND
   SWRN ID...
   
   PRIMARY CONDITIONS: SUSTAINED SWLY WINDS FROM 20-25 MPH WITH GUSTS
   OVER 30 MPH...MIN RH READINGS FROM 10-15 PERCENT
   
   SWLY MID LEVEL FLOW WILL INCREASE DURING THE PERIOD AS A STRONG
   UPPER TROUGH MOVES INTO THE PAC NW COAST. AHEAD OF THIS SYSTEM...SFC
   LOW PRESSURE WILL DEEPEN OVER ERN ORE/WA. THE COMBINATION OF AN
   INCREASING SFC PRESSURE GRADIENT ALONG WITH VERTICAL MIXING OF
   STRONG MID LEVEL WINDS TO THE SFC WILL SUPPORT SWLY SFC WINDS FROM
   20-25 MPH BY THE AFTERNOON. WARM TEMPERATURES IN THE 80S/LOWER 90S 
   AND ASSOCIATED MIN RH READINGS FROM 10-15 PERCENT WILL OCCUR AHEAD
   OF A SFC COLD FRONT. AS THE SFC COLD FRONT MOVES ACROSS ERN ORE
   DURING THE LATE AFTERNOON HRS...A WIND SHIFT TO THE NW AND SLIGHTLY
   COOLER TEMPERATURES/HIGH RH READINGS WILL OCCUR.  RH RECOVERY WILL
   BE GOOD BEHIND THE COLD FRONT WHICH SHOULD REACH A FAR NERN CA TO
   ECENTRAL ORE LINE BY 29/12Z. AHEAD OF THE FRONT...POOR RH RECOVERY
   IS EXPECTED OVERNIGHT...ESPECIALLY IN HIGHER ELEVATIONS WHERE WINDS
   SHOULD REMAIN MODERATE.
   
   ..CROSBIE.. 08/27/2005
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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