


Spot Forecast
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
115 FNUS76 KPDT 041643 FWSPDT Spot Forecast for South Fork Fire...ODF National Weather Service Pendleton OR 943 AM PDT Fri Jul 4 2025 Forecast is based on forecast start time of 1000 PDT on July 04. ***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 weather system moving over the Pacific Northwest today will induce a chance (35%) of rain showers, and a very low chance (5%) of thunder. Prevailing wind direction will be southwest to west. Warmer, drier weather is expected Saturday into early next week. .REST OF TODAY... Sky/weather.........Cloudy (85-95 percent). Chance of showers. CWR.................10 percent. Chance of lightning.5 percent. Max temperature.....74-77. Min humidity........40-45 percent. Wind (20 ft)........Southwest to west winds 4-9 mph with afternoon gusts up to 15 mph. Ridgetop wind.......Southwest to west winds 5-10 mph with afternoon gusts up to 15 mph. Mixing height.......3500-4000 ft AGL. Transport winds.....Southwest 8-12 mph. Ventilation Index...Fair (400) in the afternoon. TIME (PDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM Chc of ltng (%).5 5 5 5 5 5 5 5 5 5 5 5 Temp............69 70 70 72 72 73 74 74 74 74 72 66 RH..............42 43 45 46 47 48 46 48 46 47 50 59 20 FT wind dir..SW S S S W W W W W W S S 20 FT wind spd..5 6 8 8 8 8 8 8 7 7 7 7 20 FT wind gust. 15 15 15 15 15 10 10 10 10 10 .TONIGHT... Sky/weather.........Mostly cloudy (75-85 percent). Slight chance of rain showers. CWR.................5 percent. Chance of lightning.2 percent. Min temperature.....57-60. Max humidity........60-65 percent. Wind (20 ft)........West winds 5-9 mph in the evening shifting to the south to southwest overnight. Gusts up to 15 mph. Ridgetop wind.......West winds 6-11 mph in the evening shifting to the south to southwest overnight. Gusts up to 15 mph. Mixing height.......Decreasing to 800-1000 ft AGL overnight. Transport winds.....South to southwest 8-12 mph. Ventilation Index...Poor (80) increasing to poor (110) overnight. .SATURDAY... Sky/weather.........Partly sunny (60-70 percent) then becoming sunny (5-15 percent). CWR.................0 percent. Chance of lightning.1 percent. Max temperature.....84-87. Min humidity........20-25 percent. Wind (20 ft)........Southwest winds 5-9 mph with gusts up to 15 mph in the morning, shifting to the west 5-8 mph in the afternoon. Ridgetop wind.......Southwest winds 6-11 mph with gusts up to 15 mph in the morning, shifting to the west 5-8 mph in the afternoon. Mixing height.......Increasing to 6500-7000 ft AGL by late morning. Transport winds.....Southwest 8-14 mph. Ventilation Index...Good (550). $$ Forecaster...Plunkett Requested by...Anthony Goodwater Type of request...WILDFIRE .TAG 2517314.0/PDT .DELDT 07/04/25 .FormatterVersion 2.0.0 .EMAIL ORBMC@firenet.gov