189
FNUS76 KPDT 250018
FWSPDT

Spot Forecast for Tule burn rx...OR-WSA
National Weather Service Pendleton OR
518 PM PDT Sat Oct 24 2026

Forecast is based on ignition time of 1800 PDT on October 24.
***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...

Light north winds under 5 mph Tonight should become more
variable by midnight. Maximum relative humidity will drop
by about 10% into Sunday Afternoon. No precipitation is
expected and no dry lightning. High clouds will overspread
the area.



.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....35-38.
Max humidity........69-74 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds.
Mixing height.......500 ft AGL early in the evening then 500 ft AGL
                    early in the morning.
Transport winds.....Northeast around 5 mph in the evening becoming
                    light, then becoming south around 5 mph
                    overnight.
Ventilation Index...Low (30).

TIME (PDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............59     54     47     43     41     37
RH..............33     37     45     52     59     67
20 ft wind......N 4    N 2    N 2    E 3    SE 4   S 3
20 ft wind gust.  5      2      2      3       4     3

.SUNDAY...

Sky/weather.........Mostly cloudy (70-80 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....65-68.
Min humidity........30-35 percent.
Wind (20 ft)........Light winds becoming south 5 to 7 mph in the
                    late morning and early afternoon, then shifting
                    to the north 5 to 8 mph late in the afternoon.
Ridgetop wind.......Light winds becoming south 7 to 10 mph in the
                    late morning and early afternoon, then shifting
                    to the north 7 to 10 mph late in the afternoon.
Mixing height.......2100 ft AGL.
Transport winds.....South 5 to 7 mph shifting to the northwest 8 to
                    10 mph late in the afternoon.
Ventilation Index...Low (30) increasing to low (60) in the
                    afternoon.

.SUNDAY NIGHT...

Sky/weather.........Mostly cloudy (75-85 percent). Chance of rain
                    showers late in the evening. Patchy fog early
                    in the morning.
CWR.................4 percent.
Chance of lightning.2 percent.
Min temperature.....35-38.
Max humidity........85-90 percent.
Wind (20 ft)........North winds 5 to 8 mph early in the evening
                    becoming light.
Ridgetop wind.......North winds 7 to 10 mph early in the evening
                    becoming light.
Mixing height.......600 ft AGL early in the evening.
Transport winds.....North 8 to 10 mph in the evening becoming
                    light, then becoming south around 5 mph
                    overnight.
Ventilation Index...Low (40) decreasing to low (30) overnight.

.MONDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Patchy fog early
                    in the morning. Chance of rain showers in the
                    morning. Rain showers likely late in the
                    morning, then slight chance of rain showers
                    late in the afternoon.
CWR.................6 percent.
Chance of lightning.3 percent.
Max temperature.....59-62.
Min humidity........54-59 percent.
Wind (20 ft)........Light winds becoming southwest 5 to 8 mph early
                    in the morning.
Ridgetop wind.......Light winds becoming southwest 5 to 8 mph early
                    in the morning.
Mixing height.......3700 ft AGL late in the morning.
Transport winds.....Southwest 5 to 9 mph increasing to 12 to 16 mph
                    late in the afternoon.
Ventilation Index...Low (30) increasing to moderate (320) in the
                    afternoon.

$$
Forecaster...Russell
Requested by...Gary Sampson
Type of request...PRESCRIBED
.TAG 2624204.3/PDT
.DELDT 10/24/26
.FormatterVersion 2.0.0
.EMAIL gary.sampson@ctwsbnr.org