273
FNUS76 KPDT 160147
FWSPDT

Spot Forecast for Bench 81526...ORWST
National Weather Service Pendleton OR
647 PM PDT Sat Aug 15 2026

Forecast is based on forecast start time of 0600 PDT on August 16.
***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...Precipitation chances will decrease going into
Sunday and Monday, with conditions remaining dry. Relative
humidities will dip into the 20s and 30s on Sunday and Monday,
with only a recovery into the 50s Sunday night. Winds will remain
light out of the southwest.

.SUNDAY...

Sky/weather.........Mostly sunny (20-30 percent) then becoming
                    mostly cloudy (65-75 percent).
CWR.................0 percent.
Chance of lightning.3 percent.
Max temperature.....72-78.
Min humidity........27-32 percent.
Wind (20 ft)........Light winds becoming west 5 to 7 mph late in
                    the afternoon.
Mixing height.......7600 ft AGL early in the morning.
Transport winds.....Southwest 5 to 10 mph.
Ventilation Index...Low (50-60) increasing to moderate (390-420) in
                    the afternoon.

TIME (PDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............55     59     68     76     79     80
RH..............66     62     49     39     33     32
20 ft wind......SW 3   SW 3   SE 4   SE 4   SW 4   W 5
20 ft wind gust.5      5      5      6      7      8

.SUNDAY NIGHT...

Sky/weather.........Mostly cloudy (80-90 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Min temperature.....55-60.
Max humidity........45-54 percent.
Wind (20 ft)........West winds 5 to 7 mph early in the evening
                    becoming light.
Mixing height.......3400 ft AGL early in the evening then 400 ft
                    AGL overnight.
Transport winds.....West 6 to 10 mph.
Ventilation Index...Low (180-200) decreasing to low (30) overnight.

.MONDAY...

Sky/weather.........Mostly cloudy (75-85 percent) then becoming
                    mostly sunny (35-45 percent).
CWR.................0 percent.
Chance of lightning.4 percent.
Max temperature.....75-80.
Min humidity........24-30 percent.
Wind (20 ft)........Light winds becoming north 5 to 7 mph late in
                    the afternoon, then shifting to the west 5 to 6
                    mph late in the afternoon.
Mixing height.......400 ft AGL early in the morning then 8600 ft
                    AGL late in the morning.
Transport winds.....West around 6 mph increasing to around 12 mph.
Ventilation Index...Low (30) increasing to moderate (280-320) in
                    the afternoon.

$$
Forecaster...NWS Seattle
Requested by...plans
Type of request...WILDFIRE
.TAG 2619769.0/PDT
.DELDT 08/15/26
.FormatterVersion 2.0.0
.EMAIL antone.moody@ctwsbnr.org