408
FNUS76 KPDT 080209
FWSPDT

Spot Forecast for Bear Creek Unit 1...Washington DNR
National Weather Service Pendleton OR
709 PM PDT Thu May 7 2026

Forecast is based on ignition time of 1926 PDT on May 07.
***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 transport wind
   multiplied by the mixing height in 100`s of ft.
   Categories are a generalized indicator only:
   low (< 200), moderate (200-500), high (500-700),
   and very high (> 700).                           ***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Dry conditions prevail with the main highlights
being the breezy wind conditions developing Friday morning.
Winds will gust up to 10 to 20 mph through the evening hours
tonight, with lighter and terrain driven winds in the early
morning hours. Winds will develop stronger going into the
mid-morning Friday with gusts as high as 20 to 30 mph. Overnight
recoveries will be good to excellent, with high ventilation index`s
Friday afternoon.

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....40-45.
Max humidity........67-72 percent.
Wind (20 ft)........Southwest winds 5 to 10 mph with gusts to around
                    15 mph becoming light and terrain driven by midnight.
Ridgetop wind.......Southwest winds 7 to 12 mph with gusts to around
                    15 mph becoming light and variable by midnight.
Mixing height.......2900 ft AGL.
Transport winds.....West around 7 to 12 mph.
Ventilation Index...Low (110).

TIME (PDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............68     57     50     47     44     43
RH..............35     53     63     68     70     67
20 ft wind......SW 8   S 7    SW 4   W 3    N 3    NE 4
20 ft wind gust.15     11     7      5      5      6


.FRIDAY...

Sky/weather.........Partly sunny (60-70 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....68-73.
Min humidity........26-31 percent.
Wind (20 ft)........Light winds becoming southwest 7 to 12 mph with
                    gusts to around 25 mph by 8 AM.
Ridgetop wind.......Light winds becoming southwest 10 to 15 mph with
                    gusts to around 28 mph by 8 AM.
Mixing height.......4400 ft AGL early in the morning.
Transport winds.....West 11 to 16 mph.
Ventilation Index...Low (80) increasing to high (520) in the
                    afternoon.

$$
Forecaster...Day
Requested by...Adam Lieberg
Type of request...PRESCRIBED
.TAG 2613059.1/PDT
.DELDT 05/07/26
.FormatterVersion 2.0.0
.EMAIL alieberg@columbialandtrust.org