FNUS76 KPDT 151258
FWSPDT

Spot Forecast for North Wenas RX...WADNR
National Weather Service Pendleton OR
558 AM PDT Wed Apr 15 2026

Forecast is based on ignition time of 0708 PDT on April 15.
***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...Northwest winds will gradually shift to the west
behind a cold front passage this morning. Winds will shift back
to the northwest tonight through tomorrow. Post frontal snow
showers will develop by this afternoon, and persist into the
evening, resulting in a chance (25-40%) of light snow at the burn
site. Accumulations will be less than 0.5 inches. The burn site will
see lower RHs into the afternoon as dry air behind the front mixes
to the surface, with RHs in the mid 30s today and tomorrow. Overnight
recovery will be good.

.REST OF TODAY...

Sky/weather.........Partly sunny (55-65 percent). Chance of snow in
                    the afternoon.
CWR.................1 percent.
Chance of lightning.10 percent.
Max temperature.....39-42.
Min humidity........38-43 percent.
Wind (20 ft)........Northwest winds 4 to 9 mph shifting to the west
8 to 13 mph with gusts up to 25 mph around 10AM.
Ridgetop wind.......Northwest winds 5 to 10 mph shifting to the west
12 to 17 mph with gusts up to 30 mph around 10AM.
Mixing height.......6300 ft AGL.
Transport winds.....West around 20 mph.
Ventilation Index...Poor (170) increasing to excellent (1050) in
                    the afternoon.

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent). Slight chance of
                    snow in the evening.
CWR.................0 percent.
Chance of lightning.6 percent.
Min temperature.....Around 30.
Max humidity........61-66 percent.
Wind (20 ft)........West winds 7 to 13 mph with gusts up to 23 mph
shifting to the northwest 5 to 10 mph around
10PM.
Ridgetop wind.......West winds 10 to 15 mph with gusts up to 28 mph
shifting to the northwest 6 to 12 mph around
10PM.
Mixing height.......3900 ft AGL early in the evening.
Transport winds.....Northwest around 18 mph.
Ventilation Index...Fair (370) decreasing to poor (30) overnight.

.THURSDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.3 percent.
Max temperature.....43-46.
Min humidity........37-42 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph increasing to 8 to 13 mph
with gusts up to 24 mph after 9AM.
Ridgetop wind.......Northwest winds 6 to 12 mph increasing to 10 to 17 mph
with gusts up to 28 mph after 9AM.
Mixing height.......5200 ft AGL early in the morning.
Transport winds.....Northwest around 20 mph.
Ventilation Index...Poor (90) increasing to excellent (770) in the
                    afternoon.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Mostly clear. Lows in the upper 20s. Highs in the upper 40s.
Northwest winds around 6 mph.
.SATURDAY...
Mostly cloudy. Lows in the lower 30s. Highs in the lower 50s.
Light winds.
.SUNDAY...
Mostly cloudy. Chance of rain. Lows around 40. Highs in the mid
50s. Light winds.

$$
Forecaster...Lawhorn
Requested by...Christopher Brandon
Type of request...PRESCRIBED
.TAG 2610112.2/PDT
.DELDT 04/15/26
.FormatterVersion 2.0.0
.EMAIL walter.escobar@dnr.wa.gov,chris.brandon@dnr.wa.gov,jason.hoerner@dnr.wa.gov