441
FNUS76 KPDT 081211
FWSPDT

Spot Forecast for Deer 123 C...USFS
National Weather Service Pendleton OR
511 AM PDT Wed Oct 8 2025

Forecast is based on ignition time of 1100 MDT on October 08.
***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...Warm, dry (low RH and no precipitation) conditions
with gusty south to southeast winds in the late morning and
afternoon hours are forecast through Thursday. Overnight, excellent
RH recovery and predominantly light drainage winds are anticipated.

.REST OF TODAY...

Sky/weather.........Mostly sunny (5-15 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....65-68.
Min humidity........20-25 percent.
Wind (20 ft)........Drainage winds 1-4 mph early morning, becoming
                    southeast 6-10 mph with gusts of 15-20 mph by late
                    morning.
Ridgetop wind.......Drainage winds 1-4 mph early morning, becoming
                    southeast 6-10 mph with gusts of 15-20 mph by late
                    morning.
Mixing height.......Increasing to 6500-7000 ft AGL by early afternoon.
Transport winds.....South 6-10 mph increasing to 15-20 mph by afternoon.
Ventilation Index...Poor (10) increasing to excellent (1000) in the
                    afternoon.

TIME (PDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............28     40     57     63     65     64
RH..............90     58     34     27     25     27
20 ft wind......N 2    NW 3   SE 6   S 8    S 8    SE 8
20 ft wind gust.              12     18     20     14

.TONIGHT...

Sky/weather.........Partly cloudy (20-30 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Min temperature.....33-36.
Max humidity........70-75 percent.
Wind (20 ft)........Southeast winds 4-7 mph in the evening, becoming
                    drainage winds 2-5 mph overnight.
Ridgetop wind.......Southeast winds 4-7 mph in the evening, becoming
                    drainage winds 2-5 mph overnight.
Mixing height.......Decreasing to near surface overnight.
Transport winds.....Southeast 5-8 mph.
Ventilation Index...Decreasing to poor (20) overnight.

.THURSDAY...

Sky/weather.........Mostly sunny (20-30 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....68-71.
Min humidity........18-23 percent.
Wind (20 ft)........Drainage winds 1-4 mph early morning, becoming
                    southeast 5-9 mph with gusts of 15-20 mph by late
                    morning.
Ridgetop wind.......Drainage winds 1-4 mph early morning, becoming
                    southeast 5-9 mph with gusts of 15-20 mph by late
                    morning.
Mixing height.......Increasing to 5800-6300 ft AGL by early afternoon.
Transport winds.....South 6-10 mph increasing to 15-20 mph by afternoon.
Ventilation Index...Poor (20) increasing to excellent (1000) in the
                    afternoon.

$$
Forecaster...Plunkett
Requested by...Kira Santulli
Type of request...PRESCRIBED
.TAG 2523117.1/PDT
.DELDT 10/08/25
.FormatterVersion 2.0.0
.EMAIL kira.santulli@usda.gov,brett.johnson@usda.gov