FNUS76 KPDT 090232
FWSPDT

Spot Forecast for Rye Grass...WA DNR
National Weather Service Pendleton OR
732 PM PDT Wed Jul 8 2026

Forecast is based on forecast start time of 1900 PDT on July 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.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING DUE
TO WIND AND LOW RELATIVE HUMIDITY...

.DISCUSSION...Warm, dry, and breezy to windy conditions are forecast
to persist through Friday, with strongest winds during the afternoon
and evening hours. Overnight temperatures will be mild, accompanied by
fair relative humidity recovery. Afternoon temperatures will be very
warm with low relative humidity in the teens to very low 20s.

.REST OF TONIGHT...

Sky/weather.........Mostly clear (5-20 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....62-65. 
Max humidity........46-51 percent. 
Wind (20 ft)........West-northwest winds 15-20 mph with gusts of 25-35 mph
                    in the evening, decreasing to 5-10 mph with gusts of
                    12-17 mph after midnight. 
Ridgetop wind.......West-northwest winds 15-25 mph with gusts of 25-35 mph
                    in the evening, decreasing to 5-10 mph with gusts of
                    15-20 mph after midnight. 
Mixing height.......Decreasing to 300-700 ft AGL overnight. 
Transport winds.....West-northwest 18-23 mph in the evening, decreasing to 
                    6-12 mph overnight. 
Ventilation Index...Moderate (400) decreasing to low (70) 
                    overnight. 

TIME (PDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM   
Chc of ltng (%).0      0      0      0      0      0      
Temp............83     74     70     67     64     62     
RH..............27     35     42     46     50     51     
20 ft wind......WNW 18 WNW 15 WNW 12 WNW 8  WNW 8  WNW 6   
20 ft wind gust.30     30     25     20     17     12     

.THURSDAY...

Sky/weather.........Sunny (20-30 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....88-91. 
Min humidity........15-20 percent. 
Wind (20 ft)........West to northwest winds 3-6 mph early morning,
                    becoming west-northwest 10-15 mph with gusts of 15-25
                    mph mid-afternoon. 
Ridgetop wind.......West to northwest winds 3-6 mph early morning,
                    becoming west-northwest 12-17 mph with gusts of 20-30
                    mph mid-afternoon. 
Mixing height.......Increasing to 7500-8000 ft AGL by afternoon. 
Transport winds.....West-northwest 6-12 mph in the morning, increasing to
                    15-20 mph in the afternoon. 
Ventilation Index...Low (130) increasing to very high (770) in the 
                    afternoon. 

.THURSDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....62-65. 
Max humidity........50-55 percent. 
Wind (20 ft)........West-northwest winds 10-15 mph with gusts of 15-25 mph
                    in the evening, decreasing to 3-7 mph by midnight. 
Ridgetop wind.......West-northwest winds 12-17 mph with gusts of 15-25 mph
                    in the evening, decreasing to 4-8 mph by midnight. 
Mixing height.......Decreasing to 300-700 ft AGL overnight. 
Transport winds.....West-northwest 15-20 mph in the evening, decreasing to
                    10-15 mph overnight. 
Ventilation Index...Moderate (460) decreasing to low (60) 
                    overnight. 

.FRIDAY...

Sky/weather.........Sunny (5-15 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....88-91. 
Min humidity........18-23 percent. 
Wind (20 ft)........West-northwest winds 5-10 mph early morning, becoming
                    west-northwest 12-17 mph with gusts of 15-25 mph by
                    late morning. 
Ridgetop wind.......West-northwest winds 5-10 mph early morning, becoming
                    west-northwest 14-19 mph with gusts of 15-25 mph by
                    late morning. 
Mixing height.......Increasing to 7500-8000 ft AGL by afternoon. 
Transport winds.....West 10-15 mph. 
Ventilation Index...Low (110) increasing to high (700) in the 
                    afternoon. 

$$
Forecaster...Plunkett
Requested by...Carson Zepp
Type of request...WILDFIRE
.TAG 2617053.0/PDT
.DELDT 07/08/26
.FormatterVersion 2.0.0
.EMAIL carson.zepp@dnr.wa.gov,court.martin@dnr.wa.gov