543
FNUS76 KPDT 032131
FWSPDT
SPOT FORECAST FOR BIRD TRACK 620...USFS
NATIONAL WEATHER SERVICE PENDLETON OR
231 PM PDT SAT OCT 3 2026
FORECAST IS BASED ON IGNITION TIME OF 1552 PDT ON OCTOBER 03.
***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
ELEVATED FIRE WEATHER CONDITIONS OVER THE NEXT FEW DAYS
AS DRY AIR LINGERS OVER THE AREA WITH RELATIVE HUMIDITIES DROPPING DOWN
TO 10 TO 20 PERCENT. WINDS WILL BE GENERALLY LIGHT AND VARIABLE GIVEN
THE AREA OF HIGH PRESSURE ALOFT. DIRECTION WILL BE MOSTLY TERRAIN DRIVEN,
ESPECIALLY IN THE OVERNIGHT HOURS.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-5 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....80-85.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH SHIFTING TO THE EAST
5 TO 10 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (140).
TIME (PDT) 3 PM 5 PM 7 PM 9 PM 11 PM 1 AM
CHC OF LTNG (%).0 0 0 0 0 0
TEMP............81 80 72 60 56 53
RH..............23 25 38 52 58 63
20 FT WIND......NE 4 NE 4 N 2 N 2 N 4 W 3
20 FT WIND GUST.7 6
TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....46-50.
MAX HUMIDITY........60-65 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....EAST 5 TO 10 MPH SHIFTING TO THE SOUTH LATE IN
THE EVENING.
VENTILATION INDEX...LOW (30).
SUNDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....92-97.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS.
MIXING HEIGHT.......500 FT AGL EARLY IN THE MORNING THEN 4100 FT
AGL LATE IN THE MORNING.
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH SHIFTING TO THE SOUTHWEST
5 TO 10 MPH LATE IN THE AFTERNOON, THEN
SHIFTING TO THE NORTHWEST 5 TO 10 MPH LATE IN
THE AFTERNOON.
VENTILATION INDEX...LOW (120).
FORECASTER...DAY
REQUESTED BY...USFS
TYPE OF REQUEST...PRESCRIBED
.TAG 2622875.3/PDT
.DELDT 10/03/26
.FORMATTERVERSION 2.0.0
.EMAIL TREVOR.DURR@USDA.GOV,SCOTT.GALLAGHER@USDA.GOV,ZACHARY.CULVER@USDA.GOV,BRYTON.HILL@USDA.GOV
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