229
FNUS76 KPDT 260108
FWSPDT
SPOT FORECAST FOR MONUMENT FIRE...FOREST SERVICE
NATIONAL WEATHER SERVICE PENDLETON OR
608 PM PDT TUE AUG 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 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
HUMIDITY WILL ONLY IMPROVE TO AROUND 30% OVERNIGHT AS WINDS
REMAINS BREEZY ALONG THE RIDGETOPS. ISOLATED THUNDERSTORM
CHANCES ARE LESS THAN 15 PERCENT THROUGH AROUND 7 PM.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING
MOSTLY CLEAR (15-25 PERCENT). SLIGHT CHANCE OF
SHOWERS EARLY IN THE EVENING.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.12 PERCENT.
MIN TEMPERATURE.....65-68.
MAX HUMIDITY........34-39 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 7 MPH SHIFTING TO THE EAST
OVERNIGHT, THEN BECOMING LIGHT AFTER 3 AM.
RIDGETOP WIND.......NORTHEAST WINDS 10 TO 20 MPH SHIFTING TO THE EAST
OVERNIGHT, THEN BECOMING LIGHT AFTER 3 AM.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE
NORTHEAST 6 TO 8 MPH EARLY IN THE EVENING, THEN
SHIFTING TO THE SOUTHEAST AROUND 6 MPH EARLY IN
THE MORNING.
VENTILATION INDEX...LOW (50) DECREASING TO LOW (30) OVERNIGHT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
CHC OF LTNG (%).10 10 0 0 0 0 0 0 0 0 0 0
TEMP............77 72 69 68 68 68 68 67 67 66 66 66
RH..............34 40 42 41 39 38 37 39 39 39 37 37
20 FT WIND DIR..N N NE NE NE NE NE E E SE SE SE
20 FT WIND SPD..6 6 6 6 6 5 5 5 5 4 4 4
20 FT WIND GUST.7 7 7 7 6 6 6 6 6 5 5
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). PATCHY SMOKE LATE
IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.3 PERCENT.
MAX TEMPERATURE.....81-84.
MIN HUMIDITY........22-27 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH EARLY IN
THE MORNING, THEN SHIFTING TO THE SOUTHWEST 5
TO 8 MPH IN THE LATE MORNING AND AFTERNOON
SHIFTING TO THE WEST 5 TO 7 MPH LATE IN THE
AFTERNOON.
RIDGETOP WIND.......LIGHT WINDS BECOMING SOUTH 7 TO 9 MPH EARLY IN
THE MORNING, THEN SHIFTING TO THE SOUTHWEST 7
TO 10 MPH IN THE LATE MORNING AND AFTERNOON
SHIFTING TO THE WEST 10 TO 15 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......8200 FT AGL.
TRANSPORT WINDS.....SOUTH 6 TO 15 MPH INCREASING TO AROUND 16 MPH
LATE IN THE AFTERNOON, THEN SHIFTING TO THE
WEST AROUND 7 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (50) INCREASING TO VERY HIGH (980) IN THE
AFTERNOON.
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). PATCHY SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT.
MIN TEMPERATURE.....61-64.
MAX HUMIDITY........38-43 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 8 MPH BECOMING LIGHT.
RIDGETOP WIND.......WEST WINDS 8 TO 12 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 7 TO 8 MPH DECREASING TO AROUND 6 MPH
EARLY IN THE MORNING.
VENTILATION INDEX...LOW (130) DECREASING TO LOW (30) OVERNIGHT.
THURSDAY
SKY/WEATHER.........CLOUDY (95-100 PERCENT) THEN BECOMING SUNNY
(20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT.
MAX TEMPERATURE.....74-77.
MIN HUMIDITY........31-36 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 8 MPH EARLY IN
THE MORNING.
RIDGETOP WIND.......LIGHT WINDS BECOMING WEST 8 TO 12 MPH EARLY IN
THE MORNING.
MIXING HEIGHT.......6900 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 6 MPH SHIFTING TO THE SOUTH
EARLY IN THE MORNING, THEN SHIFTING TO THE
SOUTHWEST 10 TO 12 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (30) INCREASING TO MODERATE (360) IN THE
AFTERNOON.
FORECASTER...RUSSELL
REQUESTED BY...WILLIAM SLIGER
TYPE OF REQUEST...WILDFIRE
.TAG 2620547.0/PDT
.DELDT 08/25/26
.FORMATTERVERSION 2.0.0
.EMAIL BRADY.MOCK@USDA.GOV,WILLIAMSLIGER24@GMAIL.COM
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