666  
FNUS76 KPDT 310108  
FWSPDT  
 
SPOT FORECAST FOR WILDCAT...USFS  
NATIONAL WEATHER SERVICE PENDLETON OR  
608 PM PDT SAT AUG 30 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON AUGUST 31.  
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***  
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES***  
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***  
***VENTILATION INDEX IS DERIVED FROM THE  
TRANSPORT WIND MULTIPLIED BY THE MIXING  
HEIGHT IN 100'S OF FEET. INDEX CATEGORIES  
ARE A GENERALIZED INDICATOR ONLY.***  
 
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE  
CONTACT OUR OFFICE AT (541) 276-8134.  
   
DISCUSSION  
WARM AND DRY CONDITIONS PREVAIL THROUGH THE BEGINNING  
OF THE WEEK. TEMPERATURES HOVER AROUND THE MID TO HIGH 70S WITH NO  
WETTING RAIN EXPECTED. HUMIDITY LEVELS DROP TO THE LOW 30S TODAY  
BUT RECOVER TO EXCELLENT OVERNIGHT INTO THE MID 70S. EXPECTING  
HUMIDITY LEVELS TO DROP TO A SIMILAR RANGE FOR MONDAY. WINDS  
REMAIN LIGHT MAINLY FROM THE SOUTH BETWEEN 5 TO 7 MPH WITH NORMAL  
UPSLOPE/DOWNSLOPE CYCLES OVERNIGHT AND INTO THE MORNING HOURS.  
   
SUNDAY  
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). HAZE.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.6 PERCENT.  
MAX TEMPERATURE.....75-80.  
MIN HUMIDITY........30-35 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH AROUND  
11 AM, THEN SHIFTING TO THE SOUTHWEST 4 TO 7 MPH  
AROUND 5 PM.  
RIDGETOP WIND.......LIGHT WINDS 3 TO 5 BECOMING SOUTH 7 TO 9 MPH  
AROUND 11 AM, THEN SHIFTING TO THE SOUTHWEST 6 TO  
9 MPH AROUND 5 PM.  
MIXING HEIGHT.......6200 FT AGL EARLY IN THE MORNING.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH SHIFTING TO THE SOUTH 5  
TO 12 MPH LATE IN THE AFTERNOON.  
VENTILATION INDEX...POOR (50) INCREASING TO GOOD (550) IN THE  
AFTERNOON.  
 
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 10 10 10 10  
TEMP............55 55 58 63 68 71 73 75 76 74 73 71  
RH..............51 51 49 45 40 37 36 35 34 38 41 48  
20 FT WIND DIR..S S E E E SE SE SE S S S SW  
20 FT WIND SPD..4 4 4 4 4 6 6 6 6 6 6 6  
20 FT WIND GUST.6 6 7 7 7 7 7 7 7 7 7  
   
SUNDAY NIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). HAZE.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.5 PERCENT.  
MIN TEMPERATURE.....54-57.  
MAX HUMIDITY........75-80 PERCENT.  
WIND (20 FT)........DOWNSLOPE/DOWN VALLEY WINDS 5 TO 7 MPH.  
RIDGETOP WIND.......DOWNSLOPE/DOWN VALLEY WINDS 7 TO 9 MPH.  
MIXING HEIGHT.......1400 FT AGL EARLY IN THE EVENING.  
TRANSPORT WINDS.....WEST 5 TO 6 MPH.  
VENTILATION INDEX...POOR (50) DECREASING TO POOR (30) OVERNIGHT.  
   
LABOR DAY  
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.2 PERCENT.  
MAX TEMPERATURE.....AROUND 80.  
MIN HUMIDITY........31-36 PERCENT.  
WIND (20 FT)........UPSLOPE/UP-VALLEY BECOMING 5 TO 7 MPH AROUND  
11 AM, THEN SHIFTING TO THE NORTHWEST 4 TO 7 MPH  
AROUND 8PM.  
RIDGETOP WIND.......UPSLOPE/UP-VALLEY BECOMING 7 TO 9 MPH AROUND 11 AM,  
THEN SHIFTING TO THE NORTHWEST 6 TO 9 MPH AROUND  
8PM.  
MIXING HEIGHT.......6800 FT AGL LATE IN THE MORNING.  
TRANSPORT WINDS.....WEST AROUND 5 MPH EARLY IN THE MORNING BECOMING  
LIGHT, THEN BECOMING SOUTHEAST 6 TO 12 MPH LATE  
IN THE MORNING.  
VENTILATION INDEX...POOR (30) INCREASING TO FAIR (480) IN THE  
AFTERNOON.  
 
 
FORECASTER...DAY  
REQUESTED BY...AANA KULAAS  
TYPE OF REQUEST...WILDFIRE  
.TAG 2520977.1/PDT  
.DELDT 08/30/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JOSEPH.LANDBURG@USDA.GOV,AANA_KULAAS@FIRENET.GOV  
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