FNUS76 KPDT 090404 FWSPDT Spot Forecast for Greenhorn...USFS National Weather Service Pendleton OR 904 PM PDT Wed Jul 8 2026 Forecast is based on forecast start time of 2200 PDT on July 08. ***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...Warm, dry conditions are forecast to persist through Friday. Fair overnight relative humidity recovery tonight, then poor overnight recovery Thursday night. Afternoon relative humidity is anticipated to be in the teens to very low 20s. Predominantly west to northwest winds (locally north) are expected through Thursday, followed by west to southwest winds on Friday. Strongest wind gusts are generally forecast in the late afternoon and evening hours. .REST OF TONIGHT... Sky/weather.........Mostly clear (0-15 percent). Areas of smoke. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....48-51. Max humidity........50-55 percent. Wind (20 ft)........Northwest winds 7-12 mph with gusts of 15-20 mph in the evening, becoming northwest 3-7 mph overnight. Ridgetop wind.......Northwest winds 12-17 mph with gusts of 20-25 mph in the evening, becoming northwest 4-8 mph overnight. Mixing height.......Decreasing to 400-800 ft AGL overnight. Transport winds.....Northwest 10-15 mph in the evening, decreasing to 6-10 mph overnight. Ventilation Index...Decreasing to low (50) overnight. .THURSDAY... Sky/weather.........Sunny (0-5 percent). Areas of smoke. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....67-70. Min humidity........14-19 percent. Wind (20 ft)........Northwest to west winds 4-8 mph with gusts of 10-15 mph. Ridgetop wind.......Northwest to west winds 6-11 mph with gusts of 14-19 mph. Mixing height.......Increasing to 6500-7000 ft AGL by afternoon. Transport winds.....West 8-10 mph. Ventilation Index...Low (90) increasing to high (600) in the afternoon. .THURSDAY NIGHT... Sky/weather.........Clear (0-10 percent). Areas of smoke. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....49-52. Max humidity........35-40 percent. Wind (20 ft)........Northwest winds 3-7 mph with gusts of 10-15 mph in the evening. Ridgetop wind.......Northwest winds 6-11 mph with gusts of 14-19 mph in the evening, decreasing to 4-8 mph overnight. Mixing height.......Decreasing to 300-700 ft AGL overnight. Transport winds.....Northwest 6-10 mph, strongest in the evening. Ventilation Index...Decreasing to low (40) overnight. .FRIDAY... Sky/weather.........Sunny (0-5 percent). Areas of smoke. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....69-72. Min humidity........17-22 percent. Wind (20 ft)........West to northwest winds 3-6 mph in the morning, becoming west to southwest winds 6-10 mph with gusts of 12-17 mph by late morning and afternoon. Ridgetop wind.......West to northwest winds 3-8 mph early morning, becoming west to southwest winds 8-12 mph with gusts of 15-20 mph by late morning and afternoon. Mixing height.......Increasing to 9500-1000 ft AGL by afternoon.Transport winds.....West to southwest 4-8 mph early morning, becoming southwest 10-14 mph by late morning. Ventilation Index...Low (60) increasing to very high (1100) in the afternoon. $$ Forecaster...Plunkett Requested by...IC-Turner Type of request...WILDFIRE .TAG 2616971.4/PDT .DELDT 07/08/26 .FormatterVersion 2.0.0 .EMAIL kevin.bomberger@usda.gov,kip.turner@usda.gov,orbmc@firenet.gov