FNUS76 KPDT 190932
FWSPDT

Spot Forecast for Ekone RX...Washington DNR
National Weather Service Pendleton OR
232 AM PDT Tue May 19 2026

Forecast is based on ignition time of 0700 PDT on May 19. 
***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...

Light winds under 10 mph this monring will increase in the afternoon 
as relative humidity falls to around 40 percent. Relative humidity 
will recover overnight to around 75 percent.  

.REST OF TODAY...

Sky/weather.........Mostly sunny (40-50 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....65-68. 
Min humidity........39-44 percent. 
Wind (20 ft)........West winds 5 to 10 mph increasing to 12 to 17 mph in the afternoon. 
Ridgetop wind.......West winds 6 to 11 mph increasing to 15 to 18 mph in the afternoon. 
Mixing height.......5400 ft AGL. 
Transport winds.....West 6 to 12 mph increasing to around 17 mph 
                    late in the afternoon. 
Ventilation Index...Low (70) increasing to high (620) 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............45     50     57     61     64     65     
RH..............72     65     54     48     43     43     
20 ft wind......W 7    W 8    SW 10  W 12   W 15   W 18   
20 ft wind gust.       10                   16            

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming 
                    partly cloudy (35-45 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....44-47. 
Max humidity........73-78 percent. 
Wind (20 ft)........West winds 7 to 18 mph shifting to the 
                    northwest 5 to 8 mph late in the evening. 
Ridgetop wind.......West winds 7 to 18 mph shifting to the 
                    northwest 5 to 8 mph late in the evening.  
Mixing height.......500 ft AGL in the evening then 700 ft AGL early 
                    in the morning. 
Transport winds.....West 16 to 17 mph shifting to the north 6 to 8 
                    mph late in the evening. 
Ventilation Index...Moderate (290) decreasing to low (30) 
                    overnight. 

.WEDNESDAY...

Sky/weather.........Mostly sunny (25-35 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....Around 70. 
Min humidity........33-38 percent. 
Wind (20 ft)........North winds 5 to 7 mph shifting to the 
                    southwest 7 to 9 mph in the morning. 
Ridgetop wind.......North winds 5 to 7 mph shifting to the 
                    southwest 7 to 9 mph in the morning.  
Mixing height.......5900 ft AGL. 
Transport winds.....North 6 to 8 mph shifting to the northwest 
                    around 8 mph late in the afternoon. 
Ventilation Index...Low (80) increasing to moderate (350) in the 
                    afternoon. 

.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...
Partly cloudy. Lows in the upper 40s. Highs in the lower 70s.
North winds around 5 mph. 
.FRIDAY...
Mostly clear. Lows in the lower 50s. Highs in the mid 70s. West
winds around 5 mph. 
.SATURDAY...
Mostly clear. Lows around 50. Highs in the lower 70s. West winds
around 8 mph. 
.SUNDAY...
Partly cloudy. Lows in the upper 40s. Highs around 70. 
.MEMORIAL DAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 60s. 

$$
Forecaster...Russell
Requested by...Kyle Lapham
Type of request...PRESCRIBED
.TAG 2613854.2/PDT
.DELDT 05/19/26
.FormatterVersion 2.0.0
.EMAIL Dylan.walters@dnr.wa.gov,Kyle.Lapham@dnr.wa.gov