FNUS76 KPDT 271026 FWSPDT Spot Forecast for OCF Pile Burning...FS National Weather Service Pendleton OR 326 AM PDT Mon Oct 27 2025 Forecast is based on ignition time of 0800 PDT on October 27. ***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 the transport wind multiplied by the mixing height in 100's of feet. Index categories are a generalized indicator only.*** If you have questions or concerns with this forecast, please contact our office at (541) 276-8134. .DISCUSSION... A surface ridge of high pressure over southwest Oregon will promote light southwest to west winds over the next 18-24 hours. Winds will drop off to light to nearly calm overnight but rebound out of the south on Tuesday morning with slightly higher ridgetop wind speeds. .REST OF TODAY... Sky/weather.........Mostly sunny (30-40 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....39-42. Min humidity........45-50 percent. Wind (20 ft)........Southwest winds 5 to 7 mph early in the morning becoming light. Ridgetop wind.......8 to 10 mph Mixing height.......3600 - 4000 ft AGL. Transport winds.....West 8 to 9 mph early in the morning becoming light. Ventilation Index...Poor (30) increasing to fair (250) in the afternoon. TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM 6 PM Chc of ltng (%).0 0 0 0 0 0 Temp............23 29 34 37 38 37 RH..............91 80 66 54 50 54 20 ft wind......SW 6 SW 6 SW 6 SW 5 SW 5 SE 4 20 ft wind gust.8 8 10 8 8 6 .TONIGHT... Sky/weather.........Partly cloudy (20-30 percent). CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....26-29. Max humidity........60-65 percent. Wind (20 ft)........Light winds becoming southeast 5 to 8 mph late in the evening. Ridgetop wind.......Southeast 10 to 13 mph Mixing height.......900 ft AGL early in the evening. Transport winds.....Light winds becoming southeast 7 to 10 mph early in the evening. Ventilation Index...Poor (30). .TUESDAY... Sky/weather.........Mostly sunny (25-35 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....49-52. Min humidity........29-34 percent. Wind (20 ft)........Southeast winds 5 to 8 mph. Ridgetop wind.......Southeast 10 to 15 mph. Mixing height.......1100 ft AGL late in the morning. Transport winds.....Southeast 10 to 15 mph. Ventilation Index...Poor (30) increasing to poor (130) in the afternoon. $$ Forecaster...Russell Requested by...Jon Young Type of request...PRESCRIBED .TAG 2524508.0/PDT .DELDT 10/27/25 .FormatterVersion 2.0.0 .EMAIL samuel.pearcy@usda.gov,jonathan.young@usda.gov,jacob.rocco@usda.gov