221
FNUS76 KPDT 260546
FWSPDT

Spot Forecast for Second Street...SE Washinton IMT Type 3
National Weather Service Pendleton OR
1046 PM PDT Fri Sep 25 2026

Forecast is based on forecast start time of 0000 PDT on September 26.
***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...

West winds will remian sustained around 15 to 25 mph along the long
ridge south of the Interstate, through around 5 am before weakening, while
those winds closer tie the interstate (lower elevations) remain
light (under 10 mph). Westerly wind continue to weaken into the daylight
hours on Saturday. Winds will go light and variable by Saturday Evening.

.REST OF TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (45-55 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....45-48.
Max humidity........87-92 percent.
Wind (20 ft)........Southwest winds 5 to 14 mph.
Ridgetop wind.......Southwest winds 15 to 25 mph, weakening rapidly after about 4 am.
Mixing height.......400 ft
Transport winds.....Southwest 9 to 15 mph.
Ventilation Index...Low (50).

TIME (PDT)      MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............51  49  48  47  46  46  45  45  47  51  57  62
RH..............78  82  85  89  89  90  93  95  92  77  62  50
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..14  12  11  10  8   8   7   6   6   6   5   5
20 FT wind gust.16  14  11  11  10  10  10  10  10  10  6   6

.SATURDAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 70.
Min humidity........28-33 percent.
Wind (20 ft)........Southwest winds 5 to 8 mph shifting to the east
                    3 to 5 mph late in the afternoon.
Ridgetop wind.......Southwest winds 6 to 10 mph shifting to the east
                    3 to 6 mph late in the afternoon.
Mixing height.......5000 ft AGL early in the morning.
Transport winds.....Southwest 7 to 9 mph in the morning becoming
                    light, then becoming northeast 5 to 7 mph late
                    in the afternoon.
Ventilation Index...Low (50) decreasing to low (30) in the
                    afternoon.

.SATURDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (70-80 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 50.
Max humidity........54-59 percent.
Wind (20 ft)........Northeast winds 5 to 7 mph early in the evening
                    becoming light, then becoming north 5 to 7 mph
                    late in the evening shifting to the northwest 5
                    to 6 mph.
Ridgetop wind.......Northeast winds 6 to 9 mph early in the evening
                    becoming light, then becoming north 5 to 7 mph
                    late in the evening shifting to the northwest 5
                    to 6 mph.
Mixing height.......2000 ft AGL early in the evening.
Transport winds.....Northeast 7 to 9 mph shifting to the north
                    around 9 mph early in the morning.
Ventilation Index...Low (70) decreasing to low (30) overnight.

.SUNDAY...

Sky/weather.........Partly sunny (55-65 percent) then becoming
                    sunny (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....70-73.
Min humidity........25-30 percent.
Wind (20 ft)........North winds 5 to 8 mph.
Ridgetop wind.......North winds 7 to 11 mph.
Mixing height.......4200 ft AGL early in the morning.
Transport winds.....North 7 to 9 mph.
Ventilation Index...Low (60) increasing to moderate (280) in the
                    afternoon.

$$
Forecaster...Russell
Requested by...David Winter
Type of request...WILDFIRE
.TAG 2622554.0/PDT
.DELDT 09/25/26
.FormatterVersion 2.0.0
.EMAIL david_winter@firenet.gov