415
FNUS76 KPDT 020059
FWSPDT

Spot Forecast for Galena 40c/41...USFS
National Weather Service Pendleton OR
559 PM PDT Thu Oct 1 2026

Forecast is based on ignition time of 1900 PDT on October 01.
***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...A stalled front will stay north of the fire area
this evening, resulting in partly cloudy skies and excellent
humidity recoveries into Friday morning. An inversion will break
shortly after 1000, as a cold front passes from the northwest in
the early afternoon. This will increase winds out of the
northwest, as well as clearing skies as the front moves south.

.REST OF TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Min temperature.....42-45.
Max humidity........79-84 percent.
Wind (20 ft)........Light east winds.
Ridgetop wind.......Light east winds.
Mixing height.......2200 ft AGL early in the evening.
Transport winds.....West around 5 mph shifting to the east around 6
                    mph early in the evening, then becoming light
                    overnight.
Ventilation Index...Low (30).

TIME (PDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............64     57     54     51     49     47
RH..............48     59     65     69     73     78
20 ft wind......N 2    NE 3   E 3    E 3    N 2    N 2
20 ft wind gust.5      5      6      5

.FRIDAY...

Sky/weather.........Partly sunny (45-60 percent) then becoming
                    mostly sunny (25-35 percent) after noon.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....82-86.
Min humidity........22-27 percent.
Wind (20 ft)........Light winds becoming northwest 4 to 8 mph
                    after noon, peaking between 1400 and 1700.
Ridgetop wind.......Light winds becoming northwest 5 to 10 mph
                    after noon, peaking between 1400-1700.
Mixing height.......4700 ft AGL early in the morning.
Transport winds.....Light winds becoming west 6 to 12 mph early in
                    the morning.
Ventilation Index...Low (30) increasing to moderate (370) in the
                    afternoon.

.FRIDAY NIGHT...

Sky/weather.........Mostly clear (20-30 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....44-47.
Max humidity........71-76 percent.
Wind (20 ft)........Northwest winds 4 to 7 mph in the evening.
                    becoming light after 2000.
Ridgetop wind.......Northwest winds 5 to 9 mph in the evening.
                    becoming light after 2000.
Mixing height.......1700 ft AGL early in the evening.
Transport winds.....Northwest 7 to 9 mph shifting to the north 5 to
                    6 mph overnight.
Ventilation Index...Low (80) decreasing to low (30) overnight.



$$
Forecaster...Callihan
Requested by...Brandon Borden
Type of request...PRESCRIBED
.TAG 2622342.12/PDT
.DELDT 10/01/26
.FormatterVersion 2.0.0
.EMAIL Brandon.Borden@usda.gov