400
FNUS76 KPDT 292014
FWSPDT

Spot Forecast for RTC Test Plot...Oregon Military Dept
National Weather Service Pendleton OR
114 PM PDT Fri May 29 2026

Forecast is based on ignition time of 1400 PDT on May 29.
***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.

...WIND ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.DISCUSSION...Dry weather is generally expected through Saturday.
However, there is a low (<15 percent) chance of a passing shower or
thunderstorm this afternoon. Breezy to windy conditions are expected
this afternoon. Winds will decrease this evening, but conditions
will remain breezy on Saturday, but less than today.

MIN RH values will be 45 to 50 percent today and around 30 percent on
Saturday with good to excellent recoveries overnight.

.REST OF TODAY...

Sky/weather.........Mostly sunny (40-50 percent). Slight (<15%) chance of
                    a shower or thunderstorm.
CWR.................0 percent.
Chance of lightning.4 percent.
Max temperature.....Around 70.
Min humidity........45-50 percent.
Wind (20 ft)........Breezy. West winds 15 to 25 mph with gusts to
                    around 30 to 35 mph.
Mixing height.......3700 ft AGL.
Transport winds.....West 26 to 28 mph.
Ventilation Index...Very high (870).

TIME (PDT)      2 PM   4 PM   6 PM   8 PM   10 PM  MIDNGT
Chc of ltng (%).0      0      0      0      0      0
Temp............66     66     66     62     56     53
RH..............55     50     46     48     56     62
20 ft wind......SW 26  W 26   W 25   SW 21  SW 21  SW 18
20 ft wind gust.32     32     30     26     23     20

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) then becoming
                    mostly clear (15-25 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Min temperature.....44-47.
Max humidity........67-72 percent.
Wind (20 ft)........Breezy. Southwest winds 10 to 25 mph with gusts
                    to around 30 mph decreasing to 9 to 15 mph
                    after 3 am.
Mixing height.......1400 ft AGL in the evening then 700 ft AGL
                    early in the morning.
Transport winds.....Southwest 20 to 26 mph decreasing to around 16
                    mph overnight.
Ventilation Index...Moderate (460) decreasing to low (70)
                    overnight.

.SATURDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....69-72.
Min humidity........28-33 percent.
Wind (20 ft)........Southwest winds 10 to 20 mph.
Mixing height.......6200 ft AGL.
Transport winds.....West 13 to 16 mph.
Ventilation Index...Moderate (240) increasing to high (630) in the
                    afternoon.

$$
Forecaster...Nierenberg
Requested by...Morgan Davis
Type of request...PRESCRIBED
.TAG 2614550.1/PDT
.DELDT 05/29/26
.FormatterVersion 2.0.0
.EMAIL Morgan.j.davis@omd.oregon.gov