FNUS76 KPDT 121454 FWSPDT Spot Forecast for Minus 5 Rx Piles...Washington Department of Natural Resources National Weather Service Pendleton OR 654 AM PST Fri Dec 12 2025 Forecast is based on forecast start time of 0804 PST on December 12. ***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...Excellent (90-100%) humidity recoveries this morning as a stalled frontal system will be lifting through the day with high pressure sliding in from the west. As a result, clouds will break through the day with winds increasing by late morning and shifting more out of the west. Winds are expected to peak between 1300-1600. High pressure continues to move over the fire area into Saturday, keeping winds and mixing heights low under clearing skies. .REST OF TODAY... Sky/weather.........Partly sunny (50-60 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....51-54. Min humidity........83-88 percent. Wind (20 ft)........West southwest winds 3 to 7 mph becoming west 8 to 14 mph with gusts up to 18 mph after 1100. Ridgetop wind.......West southwest winds 4 to 9 mph becoming west 9 to 15 mph with gusts up to 20 mph after 1100. Mixing height.......300 ft AGL early in the afternoon. Transport winds.....West 8 to 13 mph. Ventilation Index...Poor (30). TIME (PST) 8 AM 10 AM NOON 2 PM 4 PM 6 PM Chc of ltng (%).0 0 0 0 0 0 Temp............45 47 50 51 50 47 RH..............98 100 92 89 88 88 20 ft wind......SW 3 W 5 W 10 W 13 W 10 W 10 20 ft wind gust.8 10 13 16 14 13 .TONIGHT... Sky/weather.........Partly cloudy (40-50 percent) then becoming mostly cloudy (55-65 percent) after midnight. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....39-42. Max humidity........83-88 percent. Wind (20 ft)........West winds 8 to 14 mph with gusts up to 18 mph becoming northwest 3 to 7 mph after 2200. Ridgetop wind.......West winds 9 to 15 mph with gusts up to 20 mph becoming northwest 4 to 8 mph after 2200. Mixing height.......Near Surface. Transport winds.....West 7 to 10 mph. Ventilation Index...Poor (30). .SATURDAY... Sky/weather.........Partly sunny (50-60 percent) then becoming sunny (10-20 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....51-54. Min humidity........71-76 percent. Wind (20 ft)........Northwest winds 3 to 7 mph becoming light and from the south southeast after 1100. Ridgetop wind.......Northwest winds 4 to 8 mph becoming light and from the south southeast after 1100. Mixing height.......200 ft AGL early in the afternoon. Transport winds.....West 6 to 7 mph early in the morning becoming light. Ventilation Index...Poor (30). $$ Forecaster...Callihan Requested by...Adam Chatman Type of request...WILDFIRE .TAG 2527033.4/PDT .DELDT 12/12/25 .FormatterVersion 2.0.0 .EMAIL adam.chatman@dnr.wa.gov