636
FNUS76 KPDT 021216
FWSPDT

Spot Forecast for Potato Hill 8/1...Yakama
National Weather Service Pendleton OR
516 AM PDT Sat Aug 2 2025

Forecast is based on forecast start time of 0600 PDT on August 02.
***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 the
   transport wind multiplied by the mixing
   height in 100`s of feet. Index categories
   are a generalized indicator only.***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Onshore flow will return to the area with relative
humidities improving tonight to excellent recoveries. Dry
conditions are expected through the weekend with more clouds
expected tonight and Sunday. West winds may become gusty in the
afternoon and evening.

.TODAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....70-73.
Min humidity........37-42 percent.
Wind (20 ft)........West winds 5 to 10 mph. Gusts up to 21 mph late
                    in the afternoon.
Ridgetop wind.......West winds 2 to 7 mph.
Mixing height.......4000 ft AGL.
Transport winds.....West 7 to 13 mph.
Ventilation Index...Poor (70) increasing to fair (290) 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............47     55     63     67     69     69
RH..............83     69     51     45     41     43
20 ft wind......W 7    W 8    W 8    W 8    W 10   W 10
20 ft wind gust.10     10     10     12     16     16

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent) then becoming
                    mostly cloudy (60-70 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....45-48.
Max humidity........86-91 percent.
Wind (20 ft)........West winds 5 to 10 mph. Gusts up to 21 mph
                    early in the evening.
Ridgetop wind.......West wind 3 to 8 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 8 to 13 mph.
Ventilation Index...Poor (150) decreasing to poor (40) overnight.

.SUNDAY...

Sky/weather.........Partly sunny (45-55 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....66-69.
Min humidity........39-44 percent.
Wind (20 ft)........West winds 5 to 11 mph.
Ridgetop wind.......West wind 2 to 7 mph.
Mixing height.......3500 ft AGL.
Transport winds.....West 7 to 12 mph.
Ventilation Index...Poor (40) increasing to poor (190) in the
                    afternoon.

$$
Forecaster...NWS Seattle
Requested by...Dolores Moore
Type of request...WILDFIRE
.TAG 2519002.2/PDT
.DELDT 08/02/25
.FormatterVersion 2.0.0
.EMAIL dolores_moore@yakama.com