715
FNUS76 KPDT 191238
FWSPDT

Spot Forecast for Liberty...Washington State Department of Natural
National Weather Service Pendleton OR
438 AM PST Wed Nov 19 2025

Forecast is based on ignition time of 0814 PST on November 19.
***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...Dry conditions expected today as high pressure moves
into the region. A weather system will clip the area during the
overnight hours heading into Thursday, but very light rain and
snow is expected should any occur at the site. The rest of the
forecast through the weekend is expected to be dry. Winds will
flow east today, before shifting more westerly behind this
upcoming system.

.TODAY...

Sky/weather.........Mostly sunny (30-40 percent) then becoming
                    mostly cloudy (65-75 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....42-45.
Min humidity........67-72 percent.
Wind (20 ft)........East winds 5 to 8 mph.
Ridgetop wind.......East winds 8 to 14 mph.
Mixing height.......1600 ft AGL.
Transport winds.....East 7 to 13 mph.
Ventilation Index...Poor (30-140).

TIME (PST)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............29     35     39     41     39     38
RH..............88     85     81     73     82     87
20 ft wind......E 7    E 8    E 8    E 8    E 7    E 7
20 ft wind gust.10     12     12     13     11     11

.TONIGHT...

Sky/weather.........Mostly cloudy (75-85 percent). Chance of a
                    light rain and snow mix overnight (50-60
                    percent).
CWR.................9 percent.
Chance of lightning.0 percent.
Min temperature.....32-35.
Max humidity........95-100 percent.
Wind (20 ft)........Northeast winds 5 to 8 mph early in the evening,
                    becoming light overnight.
Ridgetop wind.......Southeast winds 5 to 10 mph, shifting to the
                    West by sunrise.
Mixing height.......Near-surface.
Transport winds.....Northeast around 6 mph, shifting to the West
                    by sunrise.
Ventilation Index...Poor (30).

.THURSDAY...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    mostly sunny (30-40 percent). Slight chance of
                    rain early (20-30 percent), becoming dry the
                    rest of the day.
CWR.................4 percent.
Chance of lightning.0 percent.
Max temperature.....43-46.
Min humidity........84-89 percent.
Wind (20 ft)........Southwest winds 5 to 8 mph.
Ridgetop wind.......West winds 6 to 13 mph.
Mixing height.......1300 ft AGL.
Transport winds.....West around 6 mph.
Ventilation Index...Poor (30).

$$
Forecaster...Evans
Requested by...Pedro Pantoja Wright
Type of request...PRESCRIBED
.TAG 2526293.1/PDT
.DELDT 11/19/25
.FormatterVersion 2.0.0
.EMAIL pedro.wright@dnr.wa.gov