FNUS76 KPDT 211157 FWSPDT Spot Forecast for Bowman Creek Rx...Washington DNR National Weather Service Pendleton OR 457 AM PDT Mon Sep 21 2026 Forecast is based on ignition time of 0600 PDT on September 21. ***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...Elevated fire weather conditions persist through the next couple of days as dry air persists with breezy winds developing through the next couple of days. The strongest winds will occur Tuesday afternoon with gusts up 30 mph possible. Overnight recoveries will be excellent with values humidity values up to the mid 90 percent range. .TODAY... Sky/weather.........Sunny (15-25 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....82-87. Min humidity........30-35 percent. Wind (20 ft)........Light winds becoming southwest 5 to 10 mph by 10 AM. Winds shift to the west by 4 PM at 7 to 12 mph with gusts up to 15 to 25 mph. Ridgetop wind.......Light winds becoming southwest 7 to 12 mph by 10 AM. Winds shift to the west by 4 PM at 10 to 15 mph with gusts up to 20 to 30 mph. Mixing height.......3200 ft AGL early in the morning. Transport winds.....East 5 to 10 mph early in the morning becoming light, then becoming west 10 to 15 mph late in the morning. Ventilation Index...Low (30) increasing to low (200) in the afternoon. TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Chc of ltng (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............55 54 56 60 67 73 77 80 82 82 83 81 RH..............63 66 65 57 51 44 39 36 35 34 35 39 20 FT wind dir..E NE N W SW SW SW SW SW SW W W 20 FT wind spd..3 4 4 4 4 4 6 7 7 8 11 13 20 FT wind gust. 5 8 10 14 16 .TONIGHT... Sky/weather.........Partly cloudy (40-50 percent). CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....47-52. Max humidity........88-93 percent. Wind (20 ft)........West winds 7 to 12 mph, shifting to the northwest by midnight. Ridgetop wind.......West winds 10 to 15 mph, shifting to the northwest by midnight. Mixing height.......500 ft AGL in the evening. Transport winds.....West 10 to 15 mph. Ventilation Index...Low (100) decreasing to low (40) overnight. .TUESDAY... Sky/weather.........Partly sunny (45-55 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....72-77. Min humidity........35-40 percent. Wind (20 ft)........West winds 5 to 10 mph, increasing to 10 to 15 mph by 10 AM with gusts up to 20 to 30 mph. Ridgetop wind.......West winds 7 to 12 mph, increasing to 12 to 17 mph by 10 AM with gusts up to 25 to 35 mph. Mixing height.......3300 ft AGL early in the morning. Transport winds.....West 10 to 20 mph increasing to 20 to 30 mph late in the afternoon. Ventilation Index...Low (80) increasing to moderate (450) in the afternoon. $$ Forecaster...Day Requested by...Adam Lieberg Type of request...PRESCRIBED .TAG 2622141.1/PDT .DELDT 09/21/26.FormatterVersion 2.0.0 .EMAIL alieberg@columbialandtrust.org