398
FNUS76 KPDT 031817
FWSPDT

Spot Forecast for Clackamas meadows RX...OR-WSA
National Weather Service Pendleton OR
1017 AM PST Tue Nov 3 2026

Forecast is based on ignition time of 0000 PST on November 04.
***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...

Overnight relative humidity around 95 percent should deteriorate
to around 50 percent on Wednesday as clouds give way to abundant
sun for the morning and early afternoon. Cloud then return in
the afternoon with increasing chances for rain showers. Chances
for wetting rains are low Wednesday night (only around 15%).

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent). Patchy fog
                    overnight.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....32-35.
Max humidity........92-97 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds.
Mixing height.......0 ft AGL
Transport winds.....Southwest 5 to 7 mph.
Ventilation Index...Low (30).

TIME (PST)      MIDNGT 2 AM   4 AM   6 AM   8 AM   10 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............33     33     33     32     34     44
RH..............96     94     94     92     93     76
20 ft wind......N 2    N 2    N 2    N 2    N 2    N 2
20 ft wind gust.

.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent) then becoming partly
                    sunny (65-75 percent) then becoming cloudy
                    (95-100 percent).
CWR.................4 percent.
Chance of lightning.0 percent.
Max temperature.....50-53.
Min humidity........54-59 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds.
Mixing height.......3000 ft AGL.
Transport winds.....Southwest 6 to 13 mph.
Ventilation Index...Low to moderate (30-220) increasing to low to
                    moderate (110-220) in the afternoon.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy (80-90 percent). Patchy fog in
                    the evening and overnight. Rain showers likely
                    early in the evening. Rain showers in the late
                    evening and overnight.
CWR.................4 percent increasing to 17 percent in the late
                    evening and overnight, then decreasing to 0
                    percent after 3 am.
Chance of lightning.4 percent.
Min temperature.....Around 40.
Max humidity........95-100 percent.
Wind (20 ft)........Light winds becoming west 5 to 7 mph in the
                    late evening and overnight.
Ridgetop wind.......Light winds becoming west 7 to 12 mph in the
                    late evening and overnight.
Mixing height.......600 ft AGL.
Transport winds.....West 10 to 14 mph.
Ventilation Index...Low (110) decreasing to low (80-110) overnight.

.THURSDAY...

Sky/weather.........Partly sunny (45-55 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....46-49.
Min humidity........65-70 percent.
Wind (20 ft)........West winds 5 to 7 mph in the morning becoming
                    light.
Ridgetop wind.......West winds 7 to 12 mph in the morning becoming
                    light.
Mixing height.......3300 ft AGL.
Transport winds.....West 7 to 13 mph.
Ventilation Index...Low to moderate (80-280) decreasing to low to
                    moderate (30-280) in the afternoon.

$$
Forecaster...Russell
Requested by...Gary Sampson
Type of request...PRESCRIBED
.TAG 2625149.0/PDT
.DELDT 11/03/26
.FormatterVersion 2.0.0
.EMAIL davis418sohappy@gmail.com,gary.sampson@ctwsbnr.org