762 
FNUS76 KPDT 180611
FWSPDT

Spot Forecast for Columbia Way Fire...USFWS
National Weather Service Pendleton OR
1111 PM PDT Tue Jun 17 2025

Forecast is based on forecast start time of 0700 PDT on June 18. 
***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...Good (65-73%) overnight humidity recoveries
Wednesday morning with clear skies through most of the day. A weak
cold front will be passing over the fire area, resulting in breezy
conditions through the afternoon and evening. Winds will continue
to dissipate overnight Wednesday and into Thursday as an increase
in cloud cover and slightly improved (68-75%) overnight humidity 
recoveries are expected.


.WEDNESDAY...

Sky/weather.........Sunny (0-10 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....82-86. 
Min humidity........20-25 percent. 
Wind (20 ft)........Southwest winds 10 to 15 mph shifting to the 
                    west 15 to 22 mph with gusts up to 28 mph after
                    1 PM, peaking between 3 PM and 7 PM.
Mixing height.......6200 ft AGL. 
Transport winds.....Southwest 16 to 23 mph. 
Ventilation Index...Fair (320) increasing to excellent (1010) 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............62     69     75     80     83     84     
RH..............60     48     36     30     27     23     
20 ft wind......S 13   SW 13  SW 14  SW 14  SW 18  W 20   
20 ft wind gust.16     17     18     18     24     26     

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear (15-25 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....53-56. 
Max humidity........65-70 percent. 
Wind (20 ft)........West southwest winds 15 to 22 mph becoming
                    southwest 5 to 10 mph after 10 PM. 
Mixing height.......900 ft AGL. 
Transport winds.....Southwest 22 to 23 mph decreasing to 10 to 12 
                    mph. 
Ventilation Index...Good (560) decreasing to poor (80) overnight. 

.JUNETEENTH...

Sky/weather.........Mostly sunny (40-50 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....79-82. 
Min humidity........19-24 percent. 
Wind (20 ft)........Southwest winds 5 to 10 mph shifting to the 
                    west 4 to 8 mph after noon. 
Mixing height.......5600 ft AGL. 
Transport winds.....Southwest 7 to 12 mph. 
Ventilation Index...Poor (140) increasing to fair (340) in the 
                    afternoon. 

$$
Forecaster...Callihan
Requested by...Christian Meyer
Type of request...WILDFIRE
.TAG 2516166.0/PDT
.DELDT 06/18/25
.FormatterVersion 2.0.0
.EMAIL christian_meyer@fws.gov