411
FNUS76 KPDT 042046
FWSPDT

Spot Forecast for Viewpoint fire...Oregon Department of Forestry
National Weather Service Pendleton OR
146 PM PDT Fri Jul 4 2025

Forecast is based on forecast start time of 1300 PDT on July 04.
***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 weather system will continue to pass over the fire
area from the south this evening, providing chances for showers
and isolated thunderstorms before 8 PM. Winds will also be gusty
out of the northwest between 3 PM and 9 PM, peaking between 5 PM
and 8 PM. Clearing skies overnight with excellent humidity
recoveries anticipated. Warm and dry conditions expected on
Saturday as diurnally-driven winds return.

.REST OF TODAY...

Sky/weather.........Partly cloudy (50-60 percent). Chance (40-60
                    percent) of showers and slight chance (20-30
                    percent) of thunderstorms. Shower and
                    thunderstorm chances peak between 5 PM and 8
                    PM.
CWR.................30 percent.
Chance of lightning.25 percent.
Max temperature.....71-75.
Min humidity........40-45 percent.
Wind (20 ft)........Northwest winds 6 to 12 mph with gusts up to
                    20 mph, peaking after 3 PM. Gusty and erratic
                    winds expected near thunderstorms.
Mixing height.......6500 ft AGL.
Transport winds.....Northwest around 10 mph.
Ventilation Index...Fair (430).

.TONIGHT...

Sky/weather.........Mostly cloudy (50-60 percent) then becoming
                    mostly clear (0-10 percent) after 11 PM.
                    Chance (30-50 percent) of rain showers before
                    8 PM.
CWR.................30 percent.
Chance of lightning.10 percent.
Min temperature.....41-45.
Max humidity........90-95 percent.
Wind (20 ft)........Northwest winds 6 to 12 mph with gusts up to
                    20 mph before 9 PM and becoming light after
                    midnight.
Mixing height.......600 ft AGL in the evening and overnight.
Transport winds.....Northwest around 7 mph.
Ventilation Index...Fair (420) decreasing to poor (30) overnight.

.SATURDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....81-84.
Min humidity........16-22 percent.
Wind (20 ft)........Light winds becoming northwest around 5 mph in
                    the afternoon.
Mixing height.......6800 ft AGL early in the morning.
Transport winds.....Southwest around 5 mph.
Ventilation Index...Poor (40) increasing to fair (250) in the
                    afternoon.

$$
Forecaster...Callihan
Requested by...Matthew Stueve
Type of request...WILDFIRE
.TAG 2517336.0/PDT
.DELDT 07/04/25
.FormatterVersion 2.0.0
.EMAIL adam.d.hill@odf.oregon.gov