604
FNUS76 KPDT 081452
FWSPDT

Spot Forecast for Mud Lake RX...WA DNR
National Weather Service Pendleton OR
652 AM PST Sat Nov 8 2025

Forecast is based on ignition time of 0840 PST on November 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 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...Excellent (80-90%) overnight humidity recoveries
this morning as a weak inversion breaks around 0900. High pressure
over the fire area today, leading to mostly sunny skies, similar
temperatures and humidities as yesterday, with terrain-driven
winds. A stronger inversion will develop after 2000 and will
linger until late morning, likely breaking around 1100 Sunday
morning. Temperatures warm and humidities drop slightly on Sunday.

.REST OF TODAY...

Sky/weather.........Mostly sunny (20-30 percent).
CWR.................0 percent.
Max temperature.....49-52.
Min humidity........61-66 percent.
Wind (20 ft)........Northeast winds 2 to 5 mph, becoming upslope
                    around 1000 then from the southeast 4 to 8
                    mph around noon.
Ridgetop wind.......Southeast winds 5 to 10 mph, peaking between
                    1200 and 1500.
Mixing height.......3100 ft AGL.
Transport winds.....Southeast around 7 mph.
Ventilation Index...Poor to fair (60-210) increasing to poor to
                    fair (80-210) in the afternoon.

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent).
CWR.................0 percent.
Min temperature.....35-38.
Max humidity........67-72 percent.
Wind (20 ft)........Southeast winds 4 to 8 mph becoming northeast
                    2 to 5 mph after 1900 then from the northwest
                    3 to 6 mph after 2200.
Ridgetop wind.......East winds 2 to 6 mph.
Mixing height.......1600 ft AGL.
Transport winds.....East around 5 mph.
Ventilation Index...Poor (60-80) decreasing to poor (60) overnight.

.SUNDAY...

Sky/weather.........Mostly sunny (40-50 percent).
CWR.................0 percent.
Max temperature.....52-55.
Min humidity........59-64 percent.
Wind (20 ft)........Northwest winds 3 to 6 mph becoming southeast 4 to
                    8 mph after noon.
Ridgetop wind.......Southeast winds 5 to 10 mph, peaking after noon.
Mixing height.......2300 ft AGL.
Transport winds.....Southeast around 5 mph.
Ventilation Index...Poor (60-100) decreasing to poor (30-100) in
                    the afternoon.

$$
Forecaster...Callihan
Requested by...Tyler Meyer
Type of request...PRESCRIBED
.TAG 2524832.3/PDT
.DELDT 11/08/25
.FormatterVersion 2.0.0
.EMAIL carson.zepp@dnr.wa.gov,tyler.meyer@dnr.wa.gov