895
FNUS76 KPDT 201550
FWSPDT

Spot Forecast for Liberty...Washington State Department of Natural
National Weather Service Pendleton OR
750 AM PST Thu Nov 20 2025

Forecast is based on forecast start time of 0800 PST on November 20.
***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 (95-100%) overnight humidity recoveries as
a passing system is responsible for nearby observations picking up
0.04-0.08" of rain. Dry conditions are expected through the
remainder of the period, but winds will increase and peak late
morning through the early afternoon. Clouds will also break as
high pressure slides over the fire area, with a weak overnight
inversion breaking around 0900 Friday. More diurnal/terrain driven
winds Friday with slightly drier conditions.

.REST OF TODAY...

Sky/weather.........Mostly sunny (45-55 percent).
CWR.................3 percent.
Chance of lightning.0 percent.
Max temperature.....43-46.
Min humidity........85-90 percent.
Wind (20 ft)........Light winds becoming west 4 to 8 mph after
                    1100, peaking between 1100 and 1400.
Ridgetop wind.......Light winds becoming west 5 to 10 mph
                    after 1100, peaking between 1100 and 1400.
Mixing height.......1700 ft AGL in the late morning and early
                    afternoon.
Transport winds.....West 5 to 10 mph.
Ventilation Index...Poor (30-120).

TIME (PST)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............34     37     41     43     42     38
RH..............100    99     92     86     92     98
20 ft wind......W 3    W 4    W 6    W 7    W 5    W 5
20 ft wind gust.5      6      8      9      8      7

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (55-65 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....30-33.
Max humidity........92-97 percent.
Wind (20 ft)........West winds 4 to 8 mph shifting to the north
                    2 to 5 mph around midnight.
Ridgetop wind.......West winds 5 to 10 mph shifting to the north
                    3 to 7 mph around midnight.
Mixing height.......Near surface
Transport winds.....Northwest around 5 mph.
Ventilation Index...Poor (30).

.FRIDAY...

Sky/weather.........Partly sunny (50-60 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....43-46.
Min humidity........81-86 percent.
Wind (20 ft)........Northeast winds 2 to 5 mph shifting to the
                    southwest after 1000.
Ridgetop wind.......Northeast winds 3 to 7 mph shifting to the
                    southwest after 1000.
Mixing height.......700 ft AGL early in the afternoon.
Transport winds.....West around 5 mph early in the morning becoming
                    light, then becoming southwest around 5 mph
                    early in the afternoon becoming light.
Ventilation Index...Poor (30).

$$
Forecaster...Callihan
Requested by...Pedro Pantoja Wright
Type of request...WILDFIRE
.TAG 2526462.0/PDT
.DELDT 11/20/25
.FormatterVersion 2.0.0
.EMAIL pedro.wright@dnr.wa.gov