999
FNUS76 KPDT 261145
FWSPDT

Spot Forecast for North Wenas RX...WA DNR
National Weather Service Pendleton OR
445 AM PDT Sat Sep 26 2026

Forecast is based on ignition time of 0600 PDT on September 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 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...Winds will be light through the weekend, with
winds becoming southeast by the afternoons. Afternoon RHs will
be in the lower 30s today, then decrease slightly into the upper
20s tomorrow. Overnight recovery will be fair. Low level inversion
expected to develop between 7PM-8PM tonight, then lift by 11AM
Sunday morning.

.TODAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....55-58.
Min humidity........30-35 percent.
Wind (20 ft)........Light winds becoming southeast winds 4 to 7 mph
after 12PM.
Ridgetop wind.......Light variable winds becoming southeast 4 to
7 mph after 12PM.
Mixing height.......5100 ft AGL.
Transport winds.....Northwest 6 to 13 mph in the morning and early
                    afternoon becoming light, then becoming east
                    around 5 mph late in the afternoon.
Ventilation Index...Low (80-90).

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............39  38  40  44  47  49  51  51  53  53  53  54
RH..............57  61  58  51  48  42  40  39  35  35  36  35
20 FT wind dir..W   W   NW  W   NW  NW  NE  SE  SE  SE  SE  SE
20 FT wind spd..3   3   3   3   3   3   3   4   4   4   4   4
20 FT wind gust.5   4   5   5   5   5   5   6   6   6   6   5

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly cloudy (40-50 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....39-42.
Max humidity........46-51 percent.
Wind (20 ft)........Southeast winds 4 to 7 mph becoming light
downslope winds after 8PM.
Ridgetop wind.......Southeast winds 4 to 7 mph shifting to the
north 3 to 6 mph after 8PM.
Mixing height.......2200 ft AGL early in the evening then 500 ft
                    AGL late in the evening.
Transport winds.....East 5 to 6 mph shifting to the north 5 to 7
                    mph late in the evening.
Ventilation Index...Low (60) decreasing to low (30) overnight.

.SUNDAY...

Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 60.
Min humidity........29-34 percent.
Wind (20 ft)........Light downslope winds becoming southeast
4 to 7 mph around 11AM.
Ridgetop wind.......North winds 3 to 6 mph shifting to the southeast
4 to 7 mph around 11AM.
Mixing height.......4200 ft AGL early in the morning.
Transport winds.....Northeast 5 to 7 mph shifting to the east
                    around 6 mph late in the morning, then becoming
                    light late in the afternoon becoming east
                    around 6 mph late in the afternoon.
Ventilation Index...Low (40) increasing to low (130) in the
                    afternoon.

$$
Forecaster...Lawhorn
Requested by...Lane Berry
Type of request...PRESCRIBED
.TAG 2622351.3/PDT
.DELDT 09/26/26
.FormatterVersion 2.0.0
.EMAIL lane.berry@dnr.wa.gov