752
FNUS76 KPDT 241135
FWSPDT
SPOT FORECAST FOR BIRD TRACK 615/617...FOREST SERVICE
NATIONAL WEATHER SERVICE PENDLETON OR
435 AM PDT SAT OCT 24 2026
FORECAST IS BASED ON IGNITION TIME OF 0500 PDT ON OCTOBER 24.
***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
DRY AIR PERSIST THROUGH THE DAY WITH MINIMUM RH VALUES
DROPPING DOWN TO THE UPPER 20 TO LOW 30 PERCENT RANGE THROUGH SUNDAY.
WINDS OVERALL WILL BE LIGHT WITH TERRAIN DRIVEN DIRECTION AT TIMES
WITH A GENERALLY EAST/SOUTHEAST DIRECTION. OTHERWISE, OVERNIGHT
RECOVERIES WILL BE GOOD TO EXCELLENT.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....20-25.
MAX HUMIDITY........80-85 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
VENTILATION INDEX...LOW (30).
TIME (PDT) 5AM 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............26 25 24 25 30 38 45 51 55 56 57 56
RH..............87 89 90 87 69 56 44 36 32 30 31 33
20 FT WIND DIR..N SE E SW SE E E E E E SE SE
20 FT WIND SPD..2 3 3 3 3 3 3 4 4 5 5 4
20 FT WIND GUST. 4 4 4 5 6 7 7 7 7
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 3 TO 8 MPH BY
3 PM.
RIDGETOP WIND.......LIGHT WINDS BECOMING SOUTHEAST 5 TO 10 MPH BY
3 PM.
MIXING HEIGHT.......2300 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
VENTILATION INDEX...LOW (30) INCREASING TO LOW (120) IN THE
AFTERNOON.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....25-30.
MAX HUMIDITY........80-85 PERCENT.
WIND (20 FT)........EAST 3 TO 8 MPH.
RIDGETOP WIND.......EAST 5 TO 10 MPH.
MIXING HEIGHT.......600 FT AGL EARLY IN THE EVENING.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
VENTILATION INDEX...LOW (30-40).
SUNDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....59-64.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH.
RIDGETOP WIND.......SOUTHEAST WINDS 7 TO 12 MPH.
MIXING HEIGHT.......2400 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
VENTILATION INDEX...LOW (40) INCREASING TO MODERATE (200) IN THE
AFTERNOON.
FORECASTER...DAY
REQUESTED BY...SCOTT GALLAGHER
TYPE OF REQUEST...PRESCRIBED
.TAG 2624097.4/PDT
.DELDT 10/24/26
.FORMATTERVERSION 2.0.0
.EMAIL SCOTT.GALLAGHER@USDA.GOV,ZACHARY.CULVER@USDA.GOV
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