088 FNUS76 KPDT 150442 FWSPDT Spot Forecast for Triple Butte rx...OR-WSA National Weather Service Pendleton OR 942 PM PDT Wed Oct 14 2026 Forecast is based on ignition time of 0000 PDT on October 15. ***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...Southeast winds are expected to develop tonight as high pressure develops east of the Cascade crest tonight through Thursday night. Winds are expected to increase shortly after 10AM tomorrow morning, then begin weakening around 6PM tomorrow evening. Strongest winds will be along exposed ridges. Afternoon RHs will be in the upper 30s tomorrow and mid 20s Friday, with good overnight recoveries. Low level inversion will lift after 11AM in the mornings, but a mid level inversion tomorrow will limit any vertical ventilation. Low level inversion will redevelop around 6PM in the evenings. .REST OF TONIGHT... Sky/weather.........Clear (0-10 percent). CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....40-43. Max humidity........76-81 percent. Wind (20 ft)........Southeast winds 7 to 12 mph with gusts to around 17 mph. Ridgetop wind.......Southeast winds 10 to 16 mph with gusts to around 22 mph. Mixing height.......500 ft AGL. Transport winds.....East 10 to 12 mph. Ventilation Index...Low (40). TIME (PDT) MIDNGT 2 AM 4 AM 6 AM 8 AM 10 AM Chc of ltng (%).0 0 0 0 0 0 Temp............44 44 42 42 40 46 RH..............79 78 77 78 81 65 20 ft wind......SE 8 SE 7 SE 8 SE 9 SE 8 SE 11 20 ft wind gust. 15 15 18 20 24 .THURSDAY... Sky/weather.........Sunny (0-10 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....55-58. Min humidity........39-44 percent. Wind (20 ft)........Southeast winds 7 to 12 mph with gusts to around 20 mph increasing to 9 to 14 mph with gusts to around 27 mph after 10AM. Ridgetop wind.......Southeast winds 10 to 16 mph with gusts to around 24 mph increasing to 13 to 19 mph with gusts to around 30 mph after 10AM. Mixing height.......2000 ft AGL. Transport winds.....Southeast 12 to 19 mph. Ventilation Index...Low (70) increasing to moderate (270) in the afternoon. .THURSDAY NIGHT... Sky/weather.........Mostly clear (20-30 percent). CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....42-45. Max humidity........60-65 percent. Wind (20 ft)........Southeast winds 7 to 12 mph with gusts to around 24 mph decreasing to 5 to 8 mph around 8PM, then shifting to the south around 1AM. Ridgetop wind.......Southeast winds 11 to 17 mph with gusts to around 28 mph decreasing to 8 to 13 mph with gusts to around 22 mph around 8PM, then shifting to the south 6 to 11 mph around 3AM. Mixing height.......800 ft AGL early in the evening then 500 ft AGL late in the evening. Transport winds.....Southeast 10 to 12 mph shifting to the south 8 to 10 mph late in the evening. Ventilation Index...Low (50) decreasing to low (40) overnight. .FRIDAY... Sky/weather.........Mostly sunny (25-35 percent). CWR.................0 percent. Chance of lightning.0 percent.Max temperature.....64-67. Min humidity........24-29 percent. Wind (20 ft)........South winds 4 to 8 mph shifting to the southwest around 2PM. Ridgetop wind.......South winds 5 to 8 mph shifting to the southwest around 2PM. Mixing height.......2800 ft AGL. Transport winds.....South 7 to 8 mph shifting to the west around 6 mph late in the afternoon. Ventilation Index...Low (30) increasing to low (130) in the afternoon. $$ Forecaster...Lawhorn Requested by...Davis Sohappy Jr Type of request...PRESCRIBED .TAG 2623629.4/PDT .DELDT 10/15/26 .FormatterVersion 2.0.0 .EMAIL joshua.sohappy@ctwsbnr.org