342
FNUS76 KPDT 261234
FWSPDT

Spot Forecast for Deadmans Pass Pile Rx...BIA-OR-UMA
National Weather Service Pendleton OR
434 AM PST Mon Jan 26 2026

Forecast is based on ignition time of 0700 PST on January 26.
***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 weak shortwave this morning will bring clouds, but
skies will dissipate this evening as the ridge of high pressure
briefly rebuilds. A weak frontal system will approach the coast on
Tuesday, increasing cloud cover and winds - especially through
the afternoon. A slight chance (20%) of rain/snow mix is possible
late Tuesday into early Wednesday morning as the broken front
passes.

.REST OF TODAY...

Sky/weather.........Cloudy (90-100 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....38-43.
Min humidity........49-54 percent.
Wind (20 ft)........South winds 3 to 7 mph.
Ridgetop wind.......South winds 4 to 8 mph.
Mixing height.......300-500 ft AGL by afternoon.
Transport winds.....South around 7 mph.
Ventilation Index...Poor (30).

.TONIGHT...

Sky/weather.........Mostly cloudy (50-60 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....29-32.
Max humidity........56-61 percent.
Wind (20 ft)........South winds 3 to 7 mph becoming
                    southeast 4 to 10 mph after midnight.
Ridgetop wind.......South winds 4 to 8 mph becoming
                    southeast 5 to 11 mph after midnight.
Mixing height.......Near Surface
Transport winds.....South around 9 mph.
Ventilation Index...Poor (30).

.TUESDAY...

Sky/weather.........Mostly cloudy (80-90 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....37-42.
Min humidity........50-55 percent.
Wind (20 ft)........Southeast winds 4 to 10 mph increasing
                    5 to 11 mph after 6 AM, peaking between
                    8 AM and 2 PM.
Ridgetop wind.......Southeast winds 5 to 11 increasing 6
                    to 12 mph after 6 AM, peaking between
                    8 AM and 2 PM.
Mixing height.......400-600 ft AGL by afternoon.
Transport winds.....Southeast around 14 mph.
Ventilation Index...Poor (30).

$$
Forecaster...Callihan
Requested by...Sydney Thompson
Type of request...PRESCRIBED
.TAG 2601036.0/PDT
.DELDT 01/26/26
.FormatterVersion 2.0.0
.EMAIL SydneyThompson@Ctuir.org