FNUS76 KPDT 161935
FWSPDT

Spot Forecast for Grasshopper...Western Washington Team 3
National Weather Service Pendleton OR
1235 PM PDT Fri Oct 16 2026

Forecast is based on forecast start time of 0600 PDT on October 17. 
***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...Improved min RH's from today with values dropping
down to the low to mid 40 percent range. Will see drier conditions
going into Sunday with RH's dropping in the 30 to 40 percent range.
Winds in generally will be light with southwest direction shifting
towards the north in the Saturday afternoon hours. Otherwise, good
to excellent overnight recoveries expected as high in the mid to 
upper 70 percent range.

.SATURDAY...

Sky/weather.........Partly sunny (50-60 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....65-70. 
Min humidity........40-45 percent. 
Wind (20 ft)........Southwest winds 3 to 8 mph shifting to the 
                    north at 3 to 8 mph by noon. 
Ridgetop wind.......Southwest winds 5 to 10 mph shifting to the 
                    north at 5 to 10 mph by noon.  
Mixing height.......3500 ft AGL early in the morning. 
Transport winds.....West 7 to 12 mph. 
Ventilation Index...Low (40) increasing to moderate (330) in 
                    the afternoon. 

TIME (PDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM   
Chc of ltng (%).0      0      0      0      0      0      
Temp............49     48     56     62     64     64     
RH..............63     76     68     55     48     44     
20 ft wind......SW 5   SW 6   SW 5   NW 5   NW 6   W 5    
20 ft wind gust.6      8      10     8      11     12     

.SATURDAY NIGHT...

Sky/weather.........Partly cloudy (25-35 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....35-41. 
Max humidity........70-75 percent. 
Wind (20 ft)........Northwest winds 3 to 8 mph becoming light by
                    8 pm. 
Ridgetop wind.......Northwest winds 5 to 10 mph becoming light by
                    8 pm.  
Mixing height.......1600 ft AGL early in the evening. 
Transport winds.....Northwest 5 to 10 mph in the evening and 
                    overnight becoming light. 
Ventilation Index...Low (70-90) decreasing to low (30) overnight. 

.SUNDAY...

Sky/weather.........Mostly sunny (30-40 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....62-67. 
Min humidity........30-35 percent. 
Wind (20 ft)........Light winds. 
Ridgetop wind.......Light winds. 
Mixing height.......2400 ft AGL late in the morning. 
Transport winds.....Light winds becoming east 5 to 10 mph late in 
                    the morning. 
Ventilation Index...Low (30) increasing to low (140-170) in the 
                    afternoon. 

.FORECAST DAYS 3 THROUGH 5...
.MONDAY...
Mostly cloudy. Lows in the lower 40s. Highs in the upper 50s.
Light winds. 
.TUESDAY...
Partly cloudy. Lows in the lower 40s. Highs in the lower 60s.
Light winds. 
.WEDNESDAY...
Mostly clear. Lows in the lower 40s. Highs in the mid 60s. Light
winds. 

$$
Forecaster...Day
Requested by...Matt_Kinnee
Type of request...WILDFIRE
.TAG 2623792.2/PDT
.DELDT 10/16/26
.FormatterVersion 2.0.0
.EMAIL 2026.grasshopper.situation@firenet.gov,matt_kinnee@firenet.gov