005
FNUS76 KPDT 012215
FWSPDT

Spot Forecast for Potato Hill 8/1...Yakama
National Weather Service Pendleton OR
315 PM PDT Fri Aug 1 2025

Forecast is based on forecast start time of 1601 PDT on August 01.
***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...Conditions will trend cooler into early next week,
while precipitation chances will remain very low (<10%). Winds will
generally be less than 10 mph, but afternoon winds along ridgetops
may increase to 10-15 mph Saturday into early next week. Afternoon
RHs will generally be in the 40s, with excellent overnight recovery.

.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
Chance of lightning.6 percent.
Max temperature.....Around 70.
Min humidity........45-50 percent.
Wind (20 ft)........West winds 5 to 10 mph.
Ridgetop wind.......West winds 5 to 10 mph.
Mixing height.......3900 ft AGL.
Transport winds.....West 9 to 12 mph.
Ventilation Index...Poor (70) increasing to fair (240) in the
                    afternoon.

TIME (PDT)      4 PM   6 PM   8 PM   10 PM  MIDNGT 2 AM
Chc of ltng (%).10     10     0      0      0      0
Temp............68     68     62     55     52     50
RH..............49     55     70     89     91     90
20 ft wind......W 10   W 10   W 8    W 8    W 8    W 7
20 ft wind gust.14     14     14     14     11     10

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
CWR.................0 percent.
Chance of lightning.5 percent.
Min temperature.....Around 50.
Max humidity........87-92 percent.
Wind (20 ft)........West winds 5 to 10 mph.
Ridgetop wind.......West winds 5 to 10 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 8 to 12 mph.
Ventilation Index...Poor (160) decreasing to poor (40) overnight.

.SATURDAY...

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.
Ridgetop wind.......West winds 7 to 12 mph.
Mixing height.......4000 ft AGL.
Transport winds.....West 8 to 13 mph.
Ventilation Index...Poor (60) increasing to fair (290) in the
                    afternoon.

$$
Forecaster...Lawhorn
Requested by...Dolores Moore
Type of request...WILDFIRE
.TAG 2519002.1/PDT
.DELDT 08/01/25
.FormatterVersion 2.0.0
.EMAIL dolores_moore@yakama.com