FNUS76 KPDT 161840
FWSPDT

Spot Forecast for Grasshopper...Western Washington Team 3
National Weather Service Pendleton OR
1140 AM PDT Fri Oct 16 2026

Forecast is based on forecast start time of 1200 PDT on October 16. 
***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...Elevated fire weather conditions with dry min RH's
down as low as 17 percent today with improvement tomorrow. Winds
generally will be light and variable. Otherwise excellent overnight
recoveries forecasted tonight with max RH values up to 75 percent.

.REST OF TODAY...

Sky/weather.........Mostly sunny (25-35 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....75-80. 
Min humidity........17-22 percent. 
Wind (20 ft)........South winds 3 to 8 mph.
Ridgetop wind.......South winds 5 to 10 mph. 
Mixing height.......1700 ft AGL. 
Transport winds.....South 7 to 12 mph in the afternoon becoming 
                    light. 
Ventilation Index...Low (130). 

TIME (PDT)      NOON   2 PM   4 PM   6 PM   8 PM   10 PM  
Chc of ltng (%).0      0      0      0      0      0      
Temp............66     71     72     67     56     55     
RH..............29     25     25     28     35     37     
20 ft wind......S 8    SE 4   E 3    NE 2   N 2    N 2    
20 ft wind gust.14     8      6      4                    

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....44-49. 
Max humidity........70-75 percent. 
Wind (20 ft)........Light and variable winds. 
Ridgetop wind.......Light and variable winds.  
Mixing height.......500 ft AGL early in the evening. 
Transport winds.....Light winds becoming west 5 to 10 mph early in 
                    the evening. 
Ventilation Index...Low (30). 

.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 1 pm. 
Ridgetop wind.......Southwest winds 5 to 10 mph shifting to the 
                    north at 5 to 10 mph by 1 pm.  
Mixing height.......3600 ft AGL early in the morning. 
Transport winds.....West 7 to 12 mph. 
Ventilation Index...Low (40) increasing to moderate (330) in 
                    the afternoon. 

$$
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