947
FNUS76 KPDT 232354
FWSPDT

Spot Forecast for S390_Training...NOAA
National Weather Service Pendleton OR
454 PM PDT Fri May 23 2025

Forecast is based on ignition time of 1619 PDT on May 23.
***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...Fair, dry weather with mostly clear skies through
Saturday night. A warming and drying trend underway through
Sunday. Excellent RH recovery overnight with very light winds.
Generally fair smoke dispersal during the daytime with deep mixing
with ventilation becoming poor overnight. Next system comes late
Sunday bringing shower and thunderstorm chances (thunderstorm
chances around 25%).

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.3 percent.
Max temperature.....59-62.
Min humidity........37-42 percent.
Ridgetop wind.......
Mixing height.......5700 ft AGL.
Transport winds.....
Ventilation Index...

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....42-45.
Max humidity........74-79 percent.
Wind (20 ft)........North winds 5 to 8 mph.
Ridgetop wind.......
Mixing height.......800 ft AGL in the evening.
Transport winds.....Northeast around 8 mph.
Ventilation Index...Fair (220) decreasing to poor (30) overnight.

.SATURDAY...

Max temperature.....70-73.
Min humidity........25-30 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......
Ventilation Index...Poor (30) increasing to fair (240) in the
                    afternoon.

$$
Forecaster...Callihan
Requested by...Matt Callihan
Type of request...PRESCRIBED
.TAG 2514369.2/PDT
.DELDT 05/23/25
.FormatterVersion 2.0.0
.EMAIL matthew.callihan@noaa.gov