558
FNUS76 KPDT 112159
FWSPDT

Spot Forecast for Willow Fire...BLM
National Weather Service Pendleton OR
259 PM PDT Fri Jul 11 2025

Forecast is based on forecast start time of 1800 PDT on July 11.
***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...High pressure building over the region will lead
to increasing temperatures and drier conditions across the burn
area through early next week. Afternoon RHs will dip into upper
single digits and lower teens, with poor to moderate recovery
overnight. Winds will be diurnally drive, with north to northwest
winds during the day, and drainage winds overnight.

.TONIGHT...

Sky/weather.........Mostly clear (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....49-52.
Max humidity........51-56 percent.
Wind (20 ft)........North winds 5 to 8 mph becoming drainage
winds after 2AM.
Ridgetop wind.......North winds 5 to 10 mph.
Mixing height.......1000 ft AGL in the evening.
Transport winds.....North around 13 mph.
Ventilation Index...Fair (430) decreasing to poor (50) overnight.

.SATURDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 90.
Min humidity........7-12 percent.
Wind (20 ft)........Drainage winds becoming northwest 5 to 8 mph
                    after 11AM.
Ridgetop wind.......North winds 5 to 8 mph shifting to the northwest
5 to 10 mph after 11AM.
Mixing height.......6700 ft AGL early in the morning.
Transport winds.....Northwest around 7 mph.
Ventilation Index...Poor (50) increasing to fair (380) in the
                    afternoon.

.SATURDAY NIGHT...

Sky/weather.........Mostly clear (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....54-57.
Max humidity........46-51 percent.
Wind (20 ft)........Northwest winds 5 to 8 mph shifting to the
                    north around 8PM, then becoming drainage
winds after 11PM.
Ridgetop wind.......North winds 5 to 10 mph shifting to the
northeast 4 to 7 mph after 8PM.
Mixing height.......800 ft AGL in the evening.
Transport winds.....Northeast around 11 mph.
Ventilation Index...Fair (320) decreasing to poor (40) overnight.

.SUNDAY...

Sky/weather.........Sunny (0-5 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....92-95.
Min humidity........10-15 percent.
Wind (20 ft)........Drainage winds becoming northwest 5 to 10 mph
                    after 11AM.
Ridgetop wind.......Northeast winds around 5 mph becoming northwest
winds 7 to 12 mph after 11AM.
Mixing height.......9100 ft AGL early in the morning.
Transport winds.....Northwest around 9 mph.
Ventilation Index...Poor (30) increasing to good (620-630) in the
                    afternoon.

$$
Forecaster...Lawhorn
Requested by...Amy Lowe
Type of request...WILDFIRE
.TAG 2517832.0/PDT
.DELDT 07/11/25
.FormatterVersion 2.0.0
.EMAIL amy.e.lowe@usda.gov