100
FNUS76 KPDT 221826
FWSPDT

Spot Forecast for Galena 40c/41...USFS
National Weather Service Pendleton OR
1126 AM PDT Tue Sep 22 2026

Forecast is based on ignition time of 0800 PDT on September 23.
***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...

Dry conditions are expected with light winds Wednesday becoming
more gusty by Thursday Afternoon in advance of a wet system
approaching for Friday.

.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent) then becoming partly
                    sunny (50-60 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 80.
Min humidity........20-25 percent.
Wind (20 ft)........Light winds becoming west 5 to 7 mph late in
                    the afternoon.
Ridgetop wind.......Light winds becoming west 6 to 10 mph late in
                    the afternoon.
Mixing height.......6600 ft AGL.
Transport winds.....Light winds becoming southwest 10 to 12 mph
                    late in the morning, then shifting to the west
                    late in the afternoon.
Ventilation Index...Low (30) increasing to high (510) in the
                    afternoon.

TIME (PDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............46     62     72     76     75     71
RH..............56     36     29     25     26     32
20 ft wind......E 3    S 3    NE 4   W 5    W 5    NW 4
20 ft wind gust.4      4      6      10     10     10

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy (50-60 percent) then becoming
                    partly cloudy (30-40 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 50.
Max humidity........57-62 percent.
Wind (20 ft)........Light winds becoming east 5 to 7 mph overnight.
Ridgetop wind.......Light winds becoming east 8 to 10 mph overnight.
Mixing height.......1900 ft AGL early in the evening.
Transport winds.....West around 7 mph shifting to the north around
                    8 mph early in the evening, then shifting to
                    the east late in the evening.
Ventilation Index...Low (60) decreasing to low (30) overnight.

.THURSDAY...

Sky/weather.........Mostly sunny (20-30 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....83-86.
Min humidity........13-18 percent.
Wind (20 ft)........East winds 5 to 8 mph shifting to the south
                    with gusts to around 16 mph late in the
                    afternoon.
Ridgetop wind.......East winds 7 to 10 mph shifting to the south
                    with gusts to around 24 mph late in the
                    afternoon.
Mixing height.......8300 ft AGL late in the morning.
Transport winds.....East 8 to 9 mph shifting to the south 13 to 20
                    mph late in the morning.
Ventilation Index...Low (30) increasing to very high (760) in the
                    afternoon.

$$
Forecaster...Russell
Requested by...Brandon Borden
Type of request...PRESCRIBED
.TAG 2622342.0/PDT
.DELDT 09/22/26
.FormatterVersion 2.0.0
.EMAIL Brandon.Borden@usda.gov