080 
FNUS76 KPDT 091230
FWSPDT

Spot Forecast for Firewater...DNR CWC
National Weather Service Pendleton OR
530 AM PDT Mon Jun 9 2025

Forecast is based on forecast start time of 1500 PDT on June 10. 
***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.

...HEAT ADVISORY IN EFFECT UNTIL 9 PM PDT TUESDAY...
...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM
PDT TUESDAY...

.DISCUSSION...Hot, dry, and windy conditions will persist through
today and Wednesday with critical daytime RH of 10 to 20% and poor
overnight recoveries. Light NW winds this morning will build and 
turn out of the SW at 5 to 10 mph after noon, then turn back out 
of the NW and strengthen further to 10 to 15 mph by 5 to 8 PM this
evening. NW winds then diminish overnight, before building out of
the W to SW at 5 to 10 mph Wednesday morning and turning out of 
the NW again at 10 to 15 mph Wednesday afternoon to evening.

.TUESDAY...

Sky/weather.........Sunny (10-20 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....94-97. 
Min humidity........8-13 percent. 
Wind (20 ft)........Southwest winds 5 to 8 mph. 
Ridgetop wind....... 
Mixing height.......9500 ft AGL. 
Transport winds.....West around 10 mph. 
Ventilation Index...Fair (440-450). 

.TUESDAY NIGHT...

Sky/weather.........Partly cloudy (35-45 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Min temperature.....61-64. 
Max humidity........33-38 percent. 
Wind (20 ft)........Northwest winds 6 to 13 mph. 
Ridgetop wind....... 
Mixing height.......500 ft AGL in the evening and overnight then 
                    500 ft AGL early in the morning. 
Transport winds.....Northwest around 17 mph. 
Ventilation Index...Good (550-580) decreasing to poor (70-80) 
                    overnight. 

.WEDNESDAY...

Sky/weather.........Mostly sunny (25-35 percent). 
CWR.................0 percent. 
Chance of lightning.1 percent. 
Max temperature.....89-92. 
Min humidity........12-17 percent. 
Wind (20 ft)........West winds 5 to 8 mph. 
Ridgetop wind....... 
Mixing height.......9500 ft AGL. 
Transport winds.....West around 12 mph. 
Ventilation Index...Poor (100-120) increasing to good (600-620) in 
                    the afternoon. 

$$
Forecaster...NWS Portland
Requested by...Whitney Machado
Type of request...WILDFIRE
.TAG 2515552.1/PDT
.DELDT 06/09/25
.FormatterVersion 2.0.0
.EMAIL wacwc@firenet.gov