286
FNUS76 KPDT 101538
FWSPDT

Spot Forecast for MCR Windblown piles...USWFS
National Weather Service Pendleton OR
838 AM PDT Tue Mar 10 2026

Forecast is based on ignition time of 0800 PDT on March 10.
***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.

...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
THURSDAY MORNING...

.DISCUSSION...Light south winds shifting west through mid morning
becoming west south west 10-15 mph late morning-afternoon with
occasional gusts up to 25 mph. Unsettled weather pattern setting
up over the region that will prompt low chances for rain showers
(15-30%) in the afternoon-tonight with stronger winds tomorrow
than today. Winds will remain elevated overnight with and
become more southwesterly with occasional gusts 20-25 mph.

.TODAY...

Sky/weather.........Mostly sunny (35-45 percent) then becoming
                    mostly cloudy (65-75 percent). Slight chance of
                    rain late in the afternoon.
CWR.................15 percent.
Chance of lightning.5 percent.
Max temperature.....51-53.
Min humidity........28-36 percent.
Wind (20 ft)........South winds around 5 mph becoming west winds
                    10 to 15 mph with gusts up to 25 mph by late
                    morning becoming southwest by mid afternoon
Mixing height.......6200 ft AGL.
Transport winds.....West 14 to 17 mph.
Ventilation Index...Poor (120) increasing to excellent (800) in
                    the afternoon.

TIME (PDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............35  37  41  44  47  48  49  50  50  51  49  47
RH..............76  64  56  46  38  34  31  31  31  31  34  39
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd.. 5   5   5   8   9  13  15  15  15  14  14  14
20 FT wind gust.                    17  17  22  22  20  20  20

.TONIGHT...

Sky/weather.........Mostly cloudy (75-85 percent). Slight chance of
                    rain.
CWR.................15 percent.
Chance of lightning.5 percent.
Min temperature.....39-42.
Max humidity........67-72 percent.
Wind (20 ft)........Southwest winds 8 to 14 mph with occasional
                    gusts up to 25 mph.
Mixing height.......1000 ft AGL.
Transport winds.....Southwest 15 to 20 mph.
Ventilation Index...Fair (340) decreasing to poor (160) overnight.

.WEDNESDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Chance of rain
                    late in the morning.
CWR.................4 percent.
Chance of lightning.2 percent.
Max temperature.....Around 60.
Min humidity........47-52 percent.
Wind (20 ft)........Southwest winds around 10 mph increasing to
                    15 to 20 mph with gusts up to 30 mph.
Mixing height.......3400 ft AGL.
Transport winds.....Southwest 15 to 20 mph increasing to around 30
                    mph late in the afternoon.
Ventilation Index...Poor (180) increasing to fair (460) in the
                    afternoon.

$$
Forecaster...Townsend
Requested by...Brennan
Type of request...PRESCRIBED
.TAG 2605317.0/PDT
.DELDT 03/10/26
.FormatterVersion 2.0.0
.EMAIL benjamin_brennan@fws.gov