961
FNUS76 KPDT 170711
FWSPDT

Spot Forecast for WAPATO RX...YAKAMA AGENCY
National Weather Service Pendleton OR
1211 AM PDT Tue Jun 17 2025

Forecast is based on ignition time of 0900 PDT on June 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 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.

.DISCUSSION...Good (53-59%) overnight humidity recoveries Tuesday
morning will lead to improved minimum humidities as slightly
cooler high temperatures are anticipated. A weak system will pass
over the fire area late in the afternoon, increasing winds out of
the west. A more substantial system will pass on Wednesday,
leading to higher winds expected earlier in the afternoon with
slightly cooler high temperatures and improved afternoon
humidities. Expect winds shifting out of the northwest Tuesday
night through Wednesday morning.

.TUESDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....86-89.
Min humidity........16-21 percent.
Wind (20 ft)........West southwest winds 2 to 6 mph becoming west
                    5 to 10 mph with gusts up to 17 mph after 5
                    PM.
Mixing height.......7700 ft AGL.
Transport winds.....West 5 to 9 mph.
Ventilation Index...Poor (50) increasing to fair (420) in the
                    afternoon.

TIME (PDT)      9 AM   11 AM  1 PM   3 PM   5 PM   7 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............64     75     80     84     86     84
RH..............33     25     22     21     21     24
20 ft wind......W 3    SW 4   SW 4   SW 5   W 8    W 11
20 ft wind gust.              8      11     14     16

.TUESDAY NIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....54-57.
Max humidity........68-73 percent.
Wind (20 ft)........West winds 5 to 10 mph with gusts up to 17 mph
                    shifting to the northwest after 8 PM.
Mixing height.......600 ft AGL.
Transport winds.....West around 9 mph shifting to the northwest 6
                    to 10 mph early in the evening.
Ventilation Index...Fair (310) decreasing to poor (40) overnight.

.WEDNESDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....84-87.
Min humidity........18-23 percent.
Wind (20 ft)........Northwest winds 3 to 7 mph shifting to the west
                    10 to 17 mph with gusts to around 22 mph after
                    after noon, peaking between 3 PM to 9 PM.
Mixing height.......8300 ft AGL.
Transport winds.....West around 6 mph increasing to 8 to 16 mph
                    late in the morning.
Ventilation Index...Poor (90) increasing to good (630) in the
                    afternoon.

$$
Forecaster...Callihan
Requested by...SAMANTHA WATLAMET
Type of request...PRESCRIBED
.TAG 2516048.0/PDT
.DELDT 06/17/25
.FormatterVersion 2.0.0
.EMAIL samantha_watlamet@yakama.com