117
FNUS76 KPDT 300620
FWSPDT

Spot Forecast for Wildcat...USFS
National Weather Service Pendleton OR
1120 PM PDT Fri Aug 29 2025

Forecast is based on forecast start time of 0600 PDT on August 30.
***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...Winds will be light and terrain driven in the morning
and overnight periods, with southwest winds Saturday afternoon and
east to southeast winds Sunday. Afternoon RHs will be in the mid 20s
Saturday afternoon, then lower 30s Sunday afternoon with good
overnight recovery. Inversion will lift after 11AM Saturday, then
redevelop after 7PM in the evening. Sunday, the inversion will lift
around 10AM.

.SATURDAY...

Sky/weather.........Sunny (15-25 percent) then becoming partly
                    sunny in the afternoon. (50-60 percent).
Haze in the afternoon.
CWR.................0 percent.
Chance of lightning.6 percent.
Max temperature.....74-77.
Min humidity........24-29 percent.
Wind (20 ft)........Down valley winds becoming southwest around 5 mph
after 11AM.
Ridgetop wind.......West winds 4 to 7 mph shifting to the southwest
after 2PM.
Mixing height.......5800 ft AGL early in the morning.
Transport winds.....Southwest around 8 mph.
Ventilation Index...Poor (30) increasing to fair (420) in the
                    afternoon.

.SATURDAY NIGHT...

Sky/weather.........Mostly cloudy (50-60 percent) then becoming
                    partly cloudy (25-35 percent). Haze.
CWR.................0 percent.
Chance of lightning.6 percent.
Min temperature.....56-59.
Max humidity........56-61 percent.
Wind (20 ft)........West winds around 5 mph becoming down valley
after 8PM.
Ridgetop wind.......Light winds.
Mixing height.......1900 ft AGL early in the evening.
Transport winds.....Light winds.
Ventilation Index...Poor (40) decreasing to poor (30) overnight.

.SUNDAY...

Sky/weather.........Mostly sunny (25-35 percent). Haze in the
                    morning.
CWR.................0 percent.
Chance of lightning.9 percent.
Max temperature.....76-79.
Min humidity........30-35 percent.
Wind (20 ft)........Down valley winds becoming east winds around 4 mph
after 8AM, the shifting to the southeast around
4 to 7 mph after 11AM.
Ridgetop wind.......Light winds becoming southeast winds 4 to 7 mph
around 11AM.
Mixing height.......8300 ft AGL late in the morning.
Transport winds.....Southeast around 12 mph.
Ventilation Index...Poor (30) increasing to excellent (760) in the
                    afternoon.

$$
Forecaster...Lawhorn
Requested by...Aana Kulaas
Type of request...WILDFIRE
.TAG 2520977.0/PDT
.DELDT 08/30/25
.FormatterVersion 2.0.0
.EMAIL aana_kulaas@firenet.gov,joseph.landburg@usda.gov