FNUS76 KPDT 060822 FWSPDT Spot Forecast for Little Dean 18...USFS National Weather Service Pendleton OR 122 AM PDT Wed May 6 2026 Forecast is based on ignition time of 0600 PDT on May 06. ***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 continue, with diurnally and terrain driven winds forecast this morning into the afternoon. Gustiest winds are forecast late afternoon and early evening with a switch to northwesterly. Moderate RH recovery is forecast tonight, followed by another round of low afternoon RH for Thursday. While outside of the current forecast period, seeing potential for poor to moderate RH recovery Thursday night. Predominantly northwest winds are forecast Thursday and Friday. .TODAY... Sky/weather.........Mostly sunny (5-30 percent). CWR.................0 percent. Chance of lightning.2 percent. Max temperature.....72-75. Min humidity........20-25 percent. Wind (20 ft)........Drainage winds 1-4 mph very early morning, becoming upslope and upvalley winds 2-6 mph through mid-morning then shifting to the northwest 6-10 mph with gusts of 15-20 mph late afternoon. Ridgetop wind.......West to northwest winds 1-4 mph very early morning, becoming upslope and upvalley winds 3-7 mph through mid-morning then shifting to the northwest 8-12 mph with gusts of 15-25 mph late afternoon. Mixing height.......Increasing to 7500-8000 ft AGL by late morning. Transport winds.....West to northwest 6-12 mph. Ventilation Index...Low (90) increasing to very high (820) in the afternoon. TIME (PDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Chc of ltng (%).0 0 0 0 2 2 Temp............49 53 61 67 72 74 RH..............53 48 40 33 27 23 20 ft wind......W 3 W 3 SE 5 SE 7 SE 7 NW 8 20 ft wind gust. 18 .TONIGHT... Sky/weather.........Partly cloudy (35-45 percent) then becoming mostly cloudy (60-70 percent). CWR.................0 percent. Chance of lightning.2 percent. Min temperature.....49-52. Max humidity........48-53 percent. Wind (20 ft)........Northwest winds 6-10 mph with gusts of 15-20 mph in the evening, becoming variable or drainage 2-5 mph overnight. Ridgetop wind.......Northwest winds 8-12 mph with gusts of 15-25 mph in the evening, becoming west to northwest winds 4-8 mph overnight. Mixing height.......Decreasing to 300-700 ft AGL overnight. Transport winds.....West 8-12 mph. Ventilation Index...Moderate (320) decreasing to low (40) overnight. .THURSDAY... Sky/weather.........Partly cloudy (45-55 percent) then becoming mostly sunny (10-20 percent). CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....70-73. Min humidity........14-19 percent. Wind (20 ft)........West to northwest winds 6-10 mph with gusts of 15-20 mph late morning and afternoon. Ridgetop wind.......West to northwest winds 8-12 mph with gusts of 15-25 mph late morning and afternoon. Mixing height.......Increasing to 6000-6500 ft AGL by late morning. Transport winds.....Northwest 8-12 mph. Ventilation Index...Low (150) increasing to very high (840) in the afternoon. $$ Forecaster...Plunkett Requested by...Brett Johnson Type of request...PRESCRIBED .TAG 2612699.1/PDT .DELDT 05/06/26 .FormatterVersion 2.0.0 .EMAIL shane.dillavou@usda.gov,brett.johnson@usda.gov,jeffrey.duke@usda.gov