560 FNUS76 KPDT 292242 FWSPDT Spot Forecast for Lyle Hill...SE Washington Type 3 Team National Weather Service Pendleton OR 342 PM PDT Mon Jun 29 2026 Forecast is based on forecast start time of 0500 PDT on June 30. ***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...Breezy conditions continue overnight associated with an incoming system, bringing partly cloudy skies, cooler temperatures, and excellent overnight humidities over the fire area tonight. A pressure gradient will set up along the Cascades, allowing winds to steadily increase through the morning and peak between 1200 and 1600 on Tuesday. Slightly higher (+300') mixing heights Tuesday with drier (-5%) afternoon humidities. .REST OF TONIGHT... Sky/weather.........Partly cloudy (30-40 percent). CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....53-56. Max humidity........73-78 percent. Wind (20 ft)........West winds 10 to 15 mph with gusts to around 26 mph. Ridgetop wind.......West winds 12 to 17 mph with gusts to around 28 mph. Mixing height.......1100 ft AGL. Transport winds.....West around 20 mph. Ventilation Index...Moderate (380). TIME (PDT) 5AM 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM Chc of ltng (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............55 54 53 53 55 56 58 60 62 63 64 65 RH..............75 76 78 78 75 72 69 64 60 58 56 55 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..12 13 13 14 15 15 17 18 19 20 20 20 20 FT wind gust.22 23 24 25 27 28 29 30 32 34 34 34 .TUESDAY... Sky/weather.........Sunny (15-25 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....66-69. Min humidity........50-55 percent. Wind (20 ft)........West winds 10 to 15 mph with gusts to around 26 mph becoming 15 to 20 mph with gusts up to 34 mph after 1100. Ridgetop wind.......West winds 12 to 17 mph with gusts to around 28 mph becoming 17 to 23 mph with gusts up to 38 mph after 1100. Mixing height.......3600 ft AGL. Transport winds.....West 20 to 28 mph. Ventilation Index...Moderate (380) increasing to very high (800) in the afternoon. .TUESDAY NIGHT... Sky/weather.........Mostly clear (20-30 percent) then becoming mostly cloudy (70-80 percent) after 0300. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....52-55. Max humidity........70-75 percent. Wind (20 ft)........West winds 15 to 20 mph with gusts up to 34 mph becoming 7 to 14 mph with gusts up to 24 mph after midnight. Ridgetop wind.......West winds 17 to 23 mph with gusts up to 38 mph becoming 10 to 15 mph with gusts up to 27 mph after midnight. Mixing height.......500 ft AGL. Transport winds.....West 22 to 28 mph decreasing to 14 to 17 mph late in the evening. Ventilation Index...High (510) decreasing to low (70) overnight. $$ Forecaster...Callihan Requested by...David Winter Type of request...WILDFIRE .TAG 2616475.0/PDT .DELDT 06/29/26 .FormatterVersion 2.0.0 .EMAIL david_winter@firenet.gov