FNUS76 KPDT 152051
FWSPDT

Spot Forecast for Triple Butte rx...OR-WSA
National Weather Service Pendleton OR
151 PM PDT Thu Oct 15 2026

Forecast is based on ignition time of 1300 PDT on October 15. 
***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...

Sunny This afternoon with east winds around 12 mph diminishing to under
10 mph through the evening and overnight. Look for Minimum relative 
humidity around 45 percent This Afternoon to recover overnight to around 
63 percent. 
 

.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....55-58. 
Min humidity........46-51 percent. 
Wind (20 ft)........Southeast winds 7 to 12 mph. 
Ridgetop wind.......Southeast winds 11 to 16 mph.  
Mixing height.......1700 ft AGL. 
Transport winds.....Southeast 13 to 18 mph. 
Ventilation Index...Moderate (240). 

TIME (PDT)      1 PM   3 PM   5 PM   7 PM   9 PM   11 PM  
Chc of ltng (%).0      0      0      0      0      0      
Temp............53     55     54     49     45     45     
RH..............57     48     52     67     69     66     
20 ft wind......E 12   SE 12  E 8    E 8    SE 8   SE 8   
20 ft wind gust.17     16     13     11     10     10     

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....42-45. 
Max humidity........61-66 percent. 
Wind (20 ft)........Southeast winds 5 to 8 mph shifting to the 
                    south 5 to 10 mph late in the evening. 
Ridgetop wind.......Southeast winds 7 to 10 mph shifting to the 
                    south 7 to 12 mph late in the evening.  
Mixing height.......800 ft AGL early in the evening then 500 ft AGL 
                    late in the evening, then then 500 ft AGL early 
                    in the morning. 
Transport winds.....Southeast 8 to 13 mph. 
Ventilation Index...Low (60) decreasing to low (40) overnight. 

.FRIDAY...

Sky/weather.........Mostly sunny (25-35 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....64-67. 
Min humidity........23-28 percent. 
Wind (20 ft)........South winds 5 to 8 mph shifting to the 
                    southwest around 5 mph late in the afternoon, 
                    then becoming light late in the afternoon. 
Ridgetop wind.......South winds 7 to 10 mph shifting to the 
                    southwest around 7 mph late in the afternoon, 
                    then becoming light late in the afternoon.  
Mixing height.......500 ft AGL early in the morning then 2800 ft 
                    AGL late in the morning. 
Transport winds.....South 7 to 8 mph shifting to the west around 6 
                    mph late in the afternoon. 
Ventilation Index...Low (30) increasing to low (140) in the 
                    afternoon. 

$$
Forecaster...Russell
Requested by...Davis Sohappy Jr
Type of request...PRESCRIBED
.TAG 2623629.5/PDT
.DELDT 10/15/26
.FormatterVersion 2.0.0
.EMAIL joshua.sohappy@ctwsbnr.org