860
FNUS76 KPDT 040700
FWSPDT
SPOT FORECAST FOR STARVATION 11A RX...US FOREST SERVICE
NATIONAL WEATHER SERVICE PENDLETON OR
1200 AM PDT SUN OCT 4 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON OCTOBER 04.
***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 TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT IN 100'S OF FT.
CATEGORIES ARE A GENERALIZED INDICATOR ONLY:
LOW (< 200), MODERATE (200-500), HIGH (500-700),
AND VERY HIGH (> 700). ***
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE
CONTACT OUR OFFICE AT (541) 276-8134.
DISCUSSION
SURFACE WINDS WILL BE LIGHT AND TERRAIN DRIVEN (LESS THAN 5 MPH)
BEFORE BECOMING WESTERLY AT AROUND 5 MPH AROUND 1500. RIDGETOP
WIND COULD REACH 10 MPH. THESE CONDITION WILL SLACKEN AFTER 2100 AND
BECOME DOWN VALLEY AGAIN UNDER 5 MPH. LOOK FOR AFTERNOON MINIMUM
RELATIVE HUMIDITY AROUND 20 PERCENT TO RECOVER OVERNIGHT TO AROUND
50 PERCENT.
TODAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....79-82.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......WEST TO NORTHWEST WIND 5 TO 10 MPH
MIXING HEIGHT.......500 FT AGL EARLY IN THE MORNING THEN 4500 FT
AGL LATE IN THE MORNING.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE NORTHWEST
AROUND 6 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (30) INCREASING TO MODERATE (260) IN THE
AFTERNOON.
TIME (PDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
CHC OF LTNG (%).0 0 0 0 0 0
TEMP............52 58 71 78 80 78
RH..............51 45 31 24 22 26
20 FT WIND......SW 4 SW 4 N 3 NW 3 W 3 NW 3
20 FT WIND GUST.5 6 4 6 7 6
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....53-56.
MAX HUMIDITY........48-53 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS.
MIXING HEIGHT.......1200 FT AGL EARLY IN THE EVENING THEN 500 FT
AGL OVERNIGHT.
TRANSPORT WINDS.....WEST 6 TO 8 MPH.
VENTILATION INDEX...LOW (40) DECREASING TO LOW (30) OVERNIGHT.
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....74-78.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 7 MPH LATE IN
THE MORNING, THEN BECOMING LIGHT LATE IN THE
AFTERNOON.
RIDGETOP WIND.......LIGHT WINDS BECOMING WEST 6 TO 9 MPH LATE IN
THE MORNING, THEN BECOMING LIGHT LATE IN THE
AFTERNOON.
MIXING HEIGHT.......4200 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....WEST 7 TO 15 MPH.
VENTILATION INDEX...LOW (40) INCREASING TO MODERATE (450-470) IN
THE AFTERNOON.
FORECASTER...RUSSELL
REQUESTED BY...ELLYSE CAMPBELL
TYPE OF REQUEST...PRESCRIBED
.TAG 2623024.0/PDT
.DELDT 10/04/26
.FORMATTERVERSION 2.0.0
.EMAIL TODD.PEDERSON@USDA.GOV,MARK.MOELLER@USDA.GOV,ANDREW.C.HAYES@USDA.GOV,EAGLECAPWFM@GMAIL.COM
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