036
FNUS76 KPDT 260446
FWSPDT
SPOT FORECAST FOR ANTHONY FIRE...WALLOWA-WHITMAN NATIONAL FOREST
NATIONAL WEATHER SERVICE PENDLETON OR
946 PM PDT TUE AUG 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 2100 PDT ON AUGUST 25.
***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
REST OF TONIGHT
HUMIDITY OVERNIGHT AROUND 50% WILL FALL TO AROUND 15% ON WEDNESDAY AFTERNOON
ON LIGHT SOUTH TO SOUTHWEST WINDS (UNDER 12 MPH). THUNDERSTORMS OR RAIN ARE NOT EXPECTED.
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
BECOMING MOSTLY CLOUDY (55-65 PERCENT).
PATCHY SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....52-55.
MAX HUMIDITY........45-50 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 7 MPH IN
THE LATE EVENING THEN SHIFTING
TO THE SOUTH 5 TO 8 MPH OVERNIGHT.
RIDGETOP WIND.......SOUTHWEST 5 TO 7 MPH IN THE LATE EVENING
THEN SHIFTING TO THE SOUTH 5 TO 8 MPH OVERNIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 6 MPH SHIFTING TO THE SOUTH 7
TO 8 MPH LATE IN THE EVENING.
VENTILATION INDEX...LOW (150) DECREASING TO LOW (30) OVERNIGHT.
TIME (PDT) 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............56 55 56 56 55 55 55 53 53 53 53 55
RH..............48 49 48 48 49 49 48 49 49 45 47 46
20 FT WIND DIR..W SW SW S S S S S S S S S
20 FT WIND SPD..4 5 5 6 6 7 7 8 8 8 8 8
20 FT WIND GUST.5 6 10 10 11
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). PATCHY SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........13-18 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 8 MPH.
RIDGETOP WIND.......SOUTHWEST WINDS 8 TO 12 MPH.
MIXING HEIGHT.......9600 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 13 MPH INCREASING TO 20 TO 22 MPH
LATE IN THE MORNING, THEN SHIFTING TO THE
SOUTHWEST AROUND 12 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (130) INCREASING TO VERY HIGH (1050) IN THE
AFTERNOON.
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (75-85 PERCENT). PATCHY SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........52-57 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 6 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING WEST 5 TO 7 MPH
EARLY IN THE EVENING SHIFTING TO THE SOUTHWEST.
RIDGETOP WIND.......SOUTHWEST WINDS 7 TO 9 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING WEST 7 TO 9 MPH
EARLY IN THE EVENING SHIFTING TO THE SOUTHWEST.
MIXING HEIGHT.......6200 FT AGL EARLY IN THE EVENING THEN 500 FT
AGL LATE IN THE EVENING.
TRANSPORT WINDS.....SOUTHWEST AROUND 12 MPH SHIFTING TO THE
NORTHWEST AROUND 8 MPH EARLY IN THE EVENING,
THEN SHIFTING TO THE SOUTH AROUND 6 MPH
OVERNIGHT.
VENTILATION INDEX...MODERATE (240) DECREASING TO LOW (30)
OVERNIGHT.
THURSDAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT) THEN BECOMING PARTLY
SUNNY (55-65 PERCENT) THEN BECOMING SUNNY (0-10
PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....73-76.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING WEST 5 TO 7 MPH
LATE IN THE AFTERNOON SHIFTING TO THE
NORTHWEST.
RIDGETOP WIND.......SOUTHWEST WINDS 7 TO 9 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING WEST 7 TO 9 MPH
LATE IN THE AFTERNOON SHIFTING TO THE
NORTHWEST.
MIXING HEIGHT.......9100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 6 TO 15 MPH.
VENTILATION INDEX...LOW (70) INCREASING TO VERY HIGH (920) IN THE
AFTERNOON.
FORECASTER...RUSSELL
REQUESTED BY...ANDREW LIVINGSTON
TYPE OF REQUEST...WILDFIRE
.TAG 2620560.0/PDT
.DELDT 08/25/26
.FORMATTERVERSION 2.0.0
.EMAIL ANDREW.LIVINGSTON@USDA.GOV
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