609 
FNUS76 KPDT 021438
FWSPDT

Spot Forecast for South Conboy Rx...Mount Adams Resource Stewards
National Weather Service Pendleton OR
738 AM PDT Thu Oct 2 2025

Forecast is based on ignition time of 0700 PDT on October 02. 
***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...Excellent (90-100%) overnight humidity recoveries
this morning associated with an incoming system that will bring
increasing rain chances over the fire area through the day,
peaking between 1400 and 1700. However, minimal rain amounts are 
expected, staying below 0.05". Inversion breaks between 1000 and 
1100 today, returning tonight between 1900-2000 and dissipating by
1100 on Friday. Slight warming trend begins Friday with drier 
conditions early next week. 

.REST OF TODAY...

Sky/weather.........Mostly cloudy (75-85 percent). Slight chance
                    (15-25 percent) of rain showers after 11 AM.
                    Chance (25-30 percent) of rain showers between 
                    1400 and 1700, then slight chance
                    (15-20 percent) of rain showers before 2000. 
CWR.................0 percent. 
Chance of lightning.1 percent. 
Max temperature.....63-66. 
Min humidity........56-61 percent. 
Wind (20 ft)........Southeast winds 2 to 5 mph becoming southwest
                    3 to 7 mph after noon, peaking between 1500
                    and 1800. 
Ridgetop wind.......Light winds becoming southwest 4 to 9 mph
                    after noon. 
Mixing height.......4400 ft AGL. 
Transport winds.....Light winds becoming southwest 5 to 8 late in 
                    the morning. 
Ventilation Index...Poor (30) increasing to fair (230) 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............39     45     53     60     62     61     
RH..............98     99     85     67     59     63     
20 ft wind......SE 3   SE 3   S 4    SW 4   SW 5   SW 5   
20 ft wind gust.4      4      6      6      7      8      

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming 
                    partly cloudy (25-35 percent). Slight chance
                    (15-20 percent) before 2000. 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....35-38. 
Max humidity........95-100 percent. 
Wind (20 ft)........Southwest winds 3 to 7 mph before 2100, then 
                    southeast 2 to 5 mph before shifting out of the 
                    northeast shortly after midnight. 
Ridgetop wind.......Southwest winds 4 to 8 mph before 2100, then 
                    becoming light. 
Mixing height.......800 ft AGL. 
Transport winds.....Southwest 6 to 7 mph shifting to the northwest 
                    5 to 6 mph late in the evening. 
Ventilation Index...Poor (80) decreasing to poor (40) overnight. 

.FRIDAY...

Sky/weather.........Sunny (5-15 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....Around 70. 
Min humidity........44-49 percent. 
Wind (20 ft)........northeast winds 2 to 5 mph becoming southwest
                    3 to 7 mph after 1000 then becoming west 6 to 12
                    mph with gusts up to 16 mph after noon, peaking
                    between 1400 and 1800. 
Ridgetop wind.......Light winds becoming west 10 to 15 mph with
                    gusts up to 18 mph after 1100, peaking between 
                    1400 and 1800.
Mixing height.......5200 ft AGL. 
Transport winds.....Northwest around 5 mph early in the morning 
                    becoming light, then becoming west 7 to 16 mph 
                    late in the morning. 
Ventilation Index...Poor (30) increasing to fair (320) in the 
                    afternoon. 

.FORECAST DAYS 3 THROUGH 7...
.SATURDAY...
Mostly clear. Lows in the upper 30s. Highs in the mid 60s. Light
winds. 
.SUNDAY...
Mostly clear. Lows in the mid 30s. Highs in the upper 60s. Light
winds. 
.MONDAY...
Clear. Lows in the upper 30s. Highs in the upper 60s. Northeast
winds around 5 mph. 
.TUESDAY...
Clear. Lows in the upper 30s. Highs in the lower 70s. 
.WEDNESDAY...
Clear. Lows in the upper 30s. Highs in the lower 70s. 

$$
Forecaster...Callihan
Requested by...Lucas King
Type of request...PRESCRIBED
.TAG 2522890.0/PDT
.DELDT 10/02/25
.FormatterVersion 2.0.0
.EMAIL lucas@mtadamsstewards.org