175
FNUS76 KPDT 081254
FWSPDT

Spot Forecast for Wapato RX...YAKAMA AGENCY
National Weather Service Pendleton OR
554 AM PDT Mon Jun 8 2026

Forecast is based on ignition time of 0700 PDT on June 08.
***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...A low-pressure system will bring rain to the region
today, likely arriving by mid-afternoon. Winds will become breezy
during the afternoon, varying from southwest to southeast. Stronger
winds from the southwest to west are forecast on Tuesday.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    cloudy (85-95 percent). Slight chance of rain
                    late morning, chance of rain mid-afternoon, then
                    rain showers likely late afternoon.
CWR.................0 percent increasing to 10 percent late morning
                    and afternoon.
Chance of lightning.3 percent.
Max temperature.....70-73.
Min humidity........25-30 percent.
Wind (20 ft)........Northwest winds 1-4 mph early morning, becoming
                    southeast 3-6 mph mid-morning, then varying from
                    southwest to southeast 6-10 mph with gusts of
                    15-20 mph by afternoon.
Mixing height.......Increasing to 5000-5500 ft AGL by late morning.
Transport winds.....North winds becoming south 8-12 mph late in
                    the morning, then shifting to the southeast
                    6-10 mph late in the afternoon.
Ventilation Index...Low (30) increasing to moderate (500) in the
                    afternoon.

TIME (PDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Chc of ltng (%).0      0      0      0      3      3
Temp............51     59     66     68     68     65
RH..............57     42     33     33     39     52
20 ft wind......NW 3   SE 3   SE 5   SE 8   SW 9   SE 8
20 ft wind gust.                     15     16     14

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    mostly clear (20-30 percent). Rain showers
                    likely early in the evening, then slight chance
                    of rain showers overnight.
CWR.................15 percent.
Chance of lightning.6 percent.
Min temperature.....47-50.
Max humidity........85-90 percent.
Wind (20 ft)........Southeast winds 4-8 mph in the evening, shifting to the
                    southwest 8-12 mph with gusts of 15-25 mph by 3-5 am.
Mixing height.......Decreasing to 300-600 ft AGL overnight.
Transport winds.....Southeast 6-10 mph shifting to the southwest
                    8-12 mph overnight.
Ventilation Index...Decreasing to low (30) overnight.

.TUESDAY...

Sky/weather.........Mostly sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.2 percent.
Max temperature.....70-73.
Min humidity........30-35 percent.
Wind (20 ft)........Southwest winds 8-12 mph with gusts of 15-20 mph, becoming
                    west winds 15-25 mph with gusts of 25-35 mph by late morning.
Mixing height.......Increasing to 6500-7000 ft AGL by late morning.
Transport winds.....Southwest 8-12 mph early morning, becoming west 18-23 mph
                    late morning and afternoon.
Ventilation Index...Moderate (390) increasing to very high (1050)
                    in the afternoon.

$$
Forecaster...Plunkett
Requested by...SAMANTHA WATLAMET
Type of request...PRESCRIBED
.TAG 2615115.0/PDT
.DELDT 06/08/26
.FormatterVersion 2.0.0
.EMAIL samantha_watlamet@yakama.com