078
FNUS76 KPDT 201825
FWSPDT

Spot Forecast for Miller Creek RX...BLM
National Weather Service Pendleton OR
1025 AM PST Thu Nov 20 2025

Forecast is based on ignition time of 1143 MST on November 20.
***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...Slight chance (20 percent) of light rain or rain mixed
with snow early afternoon, with dry conditions then forecast through
Saturday. Winds will become northerly to northeasterly this afternoon
through the early overnight period, and periodically gusty. Lighter
terrain-driven winds are then forecast overnight through Friday.
Excellent RH recovery is forecast.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (60-85 percent). Slight chance
                    (20 percent) of light rain or rain mixed with snow
                    early afternoon.
CWR.................2 percent.
Chance of lightning.1 percent.
Max temperature.....39-42.
Min humidity........78-83 percent.
Wind (20 ft)........Becoming north winds 3-7 mph with gusts up to 12 mph
                    by afternoon.
Ridgetop wind.......Becoming north winds 6-10 mph with gusts up to 15 mph
                    by afternoon.
Mixing height.......Increasing to 1800-2200 ft AGL by early afternoon.
Transport winds.....North 6-10 mph.
Ventilation Index...Poor to fair (110-220).

TIME (MST)      12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............37  39  40  38  37  36  32  31  30  29  28  27
RH..............88  84  83  83  83  87  94  98  98  98  98  98
20 FT wind dir..N   N   N   N   N   N   N   N   N   N   N   N
20 FT wind spd..7   7   7   7   6   6   6   5   3   3   3   2
20 FT wind gust.12  12  12  12  12  12  12  12

.TONIGHT...

Sky/weather.........Mostly cloudy (50-70 percent) then becoming
                    partly cloudy (35-45 percent). Patchy freezing
                    fog.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....25-28.
Max humidity........95-100 percent.
Wind (20 ft)........Terrain-driven winds 1-4 mph.
Ridgetop wind.......North to northeast winds 4-8 mph.
Mixing height.......Decreasing to 400-600 ft AGL overnight.
Transport winds.....North to northeast winds 4-8 mph.
Ventilation Index...Decreasing to poor (15-60) overnight.

.FRIDAY...

Sky/weather.........Partly cloudy (35-45 percent) early morning,
                    becoming mostly sunny (20-40 percent) by
                    afternoon. Patchy freezing fog in the morning.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....46-48.
Min humidity........54-59 percent.
Wind (20 ft)........Terrain-driven winds 1-4 mph.
Ridgetop wind.......Terrain-driven winds 1-4 mph.
Mixing height.......Increasing to 1600-2100 ft AGL by afternoon.
Transport winds.....North-northeast winds 3-6 mph shifting to the
                    northwest 3-5 mph late morning.
Ventilation Index...Poor (50-120).

$$
Forecaster...Plunkett
Requested by...Rachel Howes
Type of request...PRESCRIBED
.TAG 2526316.1/PDT
.DELDT 11/20/25
.FormatterVersion 2.0.0
.EMAIL orbic@firenet.gov