984  
FNUS76 KPDT 172339  
FWSPDT  
 
SPOT FORECAST FOR BIRD TRACK 634B...USFS  
NATIONAL WEATHER SERVICE PENDLETON OR  
439 PM PDT THU APR 17 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1800 PDT ON APRIL 17.  
***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  
DRY CONDITIONS ARE EXPECTED THROUGH SUNDAY. GENERALLY LIGHT  
WINDS ARE ANTICIPATED THROUGH FRIDAY, WITH AN INCREASE POSSIBLE ON BY SUNDAY.  
A COLD FRONT WILL MOVE ACROSS THE AREA ON SATURDAY. MODERATE OVERNIGHT RECOVERIES  
EXPECTED TONIGHT WITH MIN RH VALUES WILL BE 20 TO 25 PERCENT ON FRIDAY. MIN RH  
VALUES WILL RISE INTO THE 40S ON SATURDAY WITH THE COLD FRONTAL PASSAGE. BY SUNDAY,  
WEST WINDS WILL INCREASE INTO THE AFTERNOON WITH GUSTS POSSIBLE TO AROUND 20 MPH.  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....30-33.  
MAX HUMIDITY........55-60 PERCENT.  
WIND (20 FT)........NORTH WINDS 5 TO 7 MPH WITH GUSTS TO AROUND 16  
MPH IN THE EVENING BECOMING LIGHT.  
RIDGETOP WIND.......NORTH WINDS 10 TO 15 MPH IN THE EVENING, THEN  
BECOMING NORTHEAST AND DECREASING TO 5 TO 10 MPH.  
MIXING HEIGHT.......1100 FT AGL IN THE EVENING, DECREASING TO 600 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 7 MPH.  
   
FRIDAY  
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....AROUND 60.  
MIN HUMIDITY........20-25 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 7 LATE IN THE AFTERNOON.  
RIDGETOP WIND.......NORTH TO NORTHWEST WINDS 5 TO 10 MPH.  
MIXING HEIGHT.......6400 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 7 MPH.  
   
FRIDAY NIGHT  
 
SKY/WEATHER.........CLEAR (0-10 PERCENT) THEN BECOMING PARTLY  
CLOUDY (25-35 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....35-38.  
MAX HUMIDITY........53-58 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
RIDGETOP WIND.......LIGHT WINDS BECOMING WEST 10 TO 15 MPH BY DAYBREAK.  
MIXING HEIGHT.......800 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.  
   
SATURDAY  
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.1 PERCENT.  
MAX TEMPERATURE.....AROUND 60.  
MIN HUMIDITY........40-45 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 10 MPH IN THE  
AFTERNOON.  
RIDGETOP WIND.......WEST WINDS 10 TO 15 MPH.  
MIXING HEIGHT.......5500 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 17 MPH.  
   
OUTLOOK FOR SUNDAY  
CONTINUED DRY. PARTLY CLOUDY. SOUTHWEST WINDS  
5 TO 10 MPH, BECOMING WEST IN THE AFTERNOON AND INCREASING TO 10 TO 15  
WITH GUSTS AS HIGH AS 20 MPH IN THE AFTERNOON.  
 
 
FORECASTER...NIERENBERG  
REQUESTED BY...RXB2  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2510786.0/PDT  
.DELDT 04/16/25  
.FORMATTERVERSION 2.0.0  
.EMAIL TERRY.GEORGE@USDA.GOV  
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