385 FNUS76 KPDT 290016 FWSPDT Spot Forecast for Lyle Hill...SE Washington Type 3 IMT National Weather Service Pendleton OR 516 PM PDT Sun Jun 28 2026 Forecast is based on forecast start time of 1800 PDT on June 28. ***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. ...WIND ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING... .DISCUSSION...Breezy to windy westerly winds will continue this evening and overnight. Good RH recovery is forecast overnight tonight and Monday night. Westerly winds will remain breezy to windy on Monday and Tuesday, and afternoon temperatures will be below normal. .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent) in the evening, becoming mostly cloudy (60-80 percent) overnight. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....53-56. Max humidity........75-80 percent. Wind (20 ft)........West winds 15-25 mph with gusts of 25-35 mph. Ridgetop wind.......West winds 20-25 mph with gusts of 35-45 mph. Mixing height.......Decreasing to 600-900 ft AGL overnight. Transport winds.....West 20-30 mph. Ventilation Index...Very high (740) decreasing to low (140) overnight. TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Chc of ltng (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............65 64 62 61 60 59 58 58 58 57 55 55 RH..............58 63 65 68 69 70 72 72 72 73 75 76 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..20 20 20 20 20 20 20 20 20 20 19 19 20 FT wind gust.30 30 30 30 30 30 30 30 30 30 30 30 .MONDAY... Sky/weather.........Mostly cloudy (65-85 percent) in the morning, becoming partly cloudy (20-40 percent) in the afternoon. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....65-68. Min humidity........55-60 percent. Wind (20 ft)........West winds 15-25 mph with gusts of 25-35 mph. Ridgetop wind.......West winds 20-30 mph with gusts of 35-45 mph. Mixing height.......Increasing to 3000-3500 ft AGL by late morning. Transport winds.....West 20-30 mph. Ventilation Index...Moderate (440) increasing to very high (760) in the afternoon. .MONDAY NIGHT... Sky/weather.........Partly cloudy (20-40 percent). CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....53-56. Max humidity........75-80 percent. Wind (20 ft)........West winds 12-18 mph with gusts of 20-30 mph. Ridgetop wind.......West winds 17-22 mph with gusts of 25-35 mph. Mixing height.......Decreasing to 400-700 ft AGL overnight. Transport winds.....West 22-27 mph decreasing to 12-17 mph overnight. Ventilation Index...Moderate (450) decreasing to low (80) overnight. .TUESDAY... Sky/weather.........Mostly sunny (10-30 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....65-68. Min humidity........53-58 percent. Wind (20 ft)........West winds 15-20 mph with gusts of 20-30 mph. Ridgetop wind.......West winds 20-30 mph with gusts of 30-40 mph. Mixing height.......Increasing to 3500-4000 ft AGL by afternoon. Transport winds.....West 15-20 mph. Ventilation Index...Moderate (270) increasing to very high (740) in the afternoon. $$ Forecaster...Plunkett Requested by...David Winter Type of request...WILDFIRE .TAG 2616389.0/PDT .DELDT 06/28/26 .FormatterVersion 2.0.0 .EMAIL david_winter@firenet.gov