282
FNUS76 KPDT 252357
FWSPDT

Spot Forecast for Bowman Creek Rx...WA DNR
National Weather Service Pendleton OR
457 PM PDT Fri Sep 25 2026

Forecast is based on forecast start time of 1700 PDT on September 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.

...WIND ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.DISCUSSION...

Strong westerly winds across the area will taper down to gusts
around 20 mph by the mid evening and to light (under 12 mph) by
around 2 am. Look for the relative humidity as low as 65 percent
Today to recover to around 99 percent Tonight.

.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....60-63.
Min humidity........65-70 percent.
Wind (20 ft)........West winds 15 to 22 mph with gusts to around 33
                    mph.
Ridgetop wind.......West winds 20 to 25 mph with gusts to around 40
                    mph.
Mixing height.......2700 ft AGL.
Transport winds.....West around 23 mph.
Ventilation Index...Moderate (260).

TIME (PDT)      5 PM   7 PM   9 PM   11 PM  1 AM   3 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............57     52     49     47     44     42
RH..............71     81     89     90     92     97
20 ft wind......W 22   W 17   W 14   W 14   W 8    SW 5
20 ft wind gust.33     26     20     20     14     6

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (50-60 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 40.
Max humidity........95-100 percent.
Wind (20 ft)........West winds 7 to 20 mph with gusts to around 30
                    mph shifting to the southwest 5 to 8 mph
                    overnight, then becoming light after 3 am.
Ridgetop wind.......West winds 18 to 25 mph with gusts to around 35
                    mph shifting to the southwest 5 to 8 mph
                    overnight, then becoming light after 3 am.
Mixing height.......500 ft AGL in the evening.
Transport winds.....West 14 to 23 mph decreasing to 5 to 8 mph
                    overnight.
Ventilation Index...Moderate (260) decreasing to low (40)
                    overnight.

.SATURDAY...

Sky/weather.........Sunny (15-25 percent) then becoming mostly
                    cloudy (70-80 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....63-66.
Min humidity........31-36 percent.
Wind (20 ft)........Light winds becoming east 5 to 7 mph early in
                    the morning, then becoming light late in the
                    morning becoming southeast 5 to 7 mph in the
                    afternoon.
Ridgetop wind.......Light winds becoming east 8 to 12 mph early in
                    the morning, then becoming light late in the
                    morning becoming southeast 8 to 12 mph in the
                    afternoon.
Mixing height.......4200 ft AGL early in the morning.
Transport winds.....Northwest around 5 mph shifting to the east 5
                    to 7 mph late in the morning.
Ventilation Index...Low (30) increasing to low (170) in the
                    afternoon.

$$
Forecaster...Russell
Requested by...Adam Lieberg
Type of request...WILDFIRE
.TAG 2622547.0/PDT
.DELDT 09/25/26
.FormatterVersion 2.0.0
.EMAIL alieberg@columbialandtrust.org