098  
FNUS76 KPDT 251257  
FWSPDT  
 
SPOT FORECAST FOR SPEARS RX...USFS OCH  
NATIONAL WEATHER SERVICE PENDLETON OR  
555 AM PDT THU MAY 25 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON MAY 25.  
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***  
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES***  
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***  
 
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE  
CONTACT OUR OFFICE AT (541) 276-8134.  
   
DISCUSSION
 
A WEAK DISTURBANCE IN THE NORTHERLY FLOW ALOFT  
COMBINED WITH AFTERNOON HEATING WILL PRODUCE A FEW THUNDERSTORMS  
INTO THE EVENING. HIGH PRESSURE WILL BEGIN TO REBUILD OVER THE  
AREA ON FRIDAY WITH DRY, STABLE, AND WARMER CONDITIONS.  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
ISOLATED SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON.  
CWR.................3 PERCENT.  
LAL.................1-8 STRIKES.  
MAX TEMPERATURE.....62.  
MIN HUMIDITY........30 PERCENT.  
WIND (20 FT)........UPSLOPE LESS THAN 5 MPH BECOMING NORTH 5 TO 8  
MPH IN THE AFTERNOON. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.  
RIDGETOP WIND.......NORTHEAST 5 TO 8 MPH  
MIXING HEIGHT.......3000-3900 FT AGL INCREASING TO 5600-7300 FT  
AGL LATE IN THE MORNING.  
TRANSPORT WINDS.....NORTHEAST AROUND 8 MPH.  
HAINES INDEX........2 (VERY LOW).  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CWR.................2 PERCENT.  
LAL.................1-8 STRIKES.  
MIN TEMPERATURE.....38.  
MAX HUMIDITY........78 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS 4 TO 9 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS IN THE  
EVENING.  
RIDGETOP WIND.......NORTH 10 TO 15 MPH  
MIXING HEIGHT.......6000 FT AGL DECREASING TO 1400-1700 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 11 MPH.  
HAINES INDEX........3 (VERY LOW).  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....66.  
MIN HUMIDITY........25 PERCENT.  
WIND (20 FT)........UPSLOPE LESS THAN 5 MPH BECOMING NORTHWEST 5  
TO 8 MPH IN THE AFTERNOON.  
RIDGETOP WIND.......NORTHEAST 10 TO 15 MPH  
MIXING HEIGHT.......1400-3000 FT AGL INCREASING TO 5900-7400 FT  
AGL LATE IN THE MORNING.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.  
HAINES INDEX........2 (VERY LOW).  
 

 
FORECASTER...HULL  
REQUESTED BY...LEX ROMINE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1710038.0/PDT  
.EMAIL LROMINE@FS.FED.US  
 
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