FNUS76 KPDT 081216
FWSPDT

Spot Forecast for Greenhorn...USFS
National Weather Service Pendleton OR
516 AM PDT Wed Jul 8 2026

Forecast is based on forecast start time of 0600 PDT on July 08. 
***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...Weak inversion breaks around 0700 this morning, with
winds increasing mid-afternoon and peaking between 1600-1900 out
of the north. Inversion sets up around 2100 tonight, breaking 
around 0800 Thursday as cooler (-3) and drier (-6%) conditions are
expected. 

.TODAY...

Sky/weather.........Sunny (10-20 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....Around 70. 
Min humidity........22-27 percent. 
Wind (20 ft)........Light winds becoming west 2 to 6 mph
                    after noon then north 8 to 15 mph with
                    gusts up to 20 mph after 1500. 
Ridgetop wind.......Light winds becoming west 3 to 7 mph
                    after noon then north 10 to 17 mph with 
                    gusts up to 22 mph after 1500. 
Mixing height.......6000 ft AGL. 
Transport winds.....West around 12 mph. 
Ventilation Index...Low (100) increasing to high (590) in the 
                    afternoon. 

.TONIGHT...

Sky/weather.........Clear (0-5 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....Around 50. 
Max humidity........49-54 percent. 
Wind (20 ft)........North winds 8 to 15 mph with gusts up to 20 mph
                    becoming northwest 5 to 10 after 0100. 
Ridgetop wind.......North winds 10 to 17 mph with gusts up to 22
                    mph becoming northwest 6 to 12 mph after 0100. 
Mixing height.......800 ft AGL in the evening then 500 ft AGL early 
                    in the morning. 
Transport winds.....Northwest around 13 mph. 
Ventilation Index...Moderate (320) decreasing to low (40) 
                    overnight. 

.THURSDAY...

Sky/weather.........Sunny (0-5 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....66-69. 
Min humidity........16-21 percent. 
Wind (20 ft)........Northwest winds 3 to 7 mph becoming 
                    west-northwest 6 to 12 mph with gusts up
                    to 17 mph after noon. Winds peak between
                    1500 and 2000. 
Ridgetop wind.......Northwest winds 4 to 8 mph becoming
                    west-northwest 7 to 14 mph with gusts up
                    to 20 mph after noon. Winds peak between
                    1500 and 2000. 
Mixing height.......5800 ft AGL. 
Transport winds.....West around 11 mph. 
Ventilation Index...Low (110) increasing to high (520) in the 
                    afternoon. 

$$
Forecaster...Callihan
Requested by...IC-Turner
Type of request...WILDFIRE
.TAG 2616971.1/PDT
.DELDT 07/08/26
.FormatterVersion 2.0.0
.EMAIL orbmc@firenet.gov,kevin.bomberger@usda.gov,kip.turner@usda.gov