581
FNUS76 KPDT 030225
FWSPDT

Spot Forecast for TUMBLE...USFS
National Weather Service Pendleton OR
725 PM PDT Tue Jun 2 2026

Forecast is based on forecast start time of 1900 PDT on June 02.
***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 winds tonight with moderate overnight RH
recoveries. Wednesday will see an increase in winds from the
SW at 5 mph increasing and shifting NW after 11 AM with speed of
5-12 mph with gusts near 20 mph. Daytime RHs will be good in the
40% range with excellent overnight recoveries. Overnight winds
will remain 5-12 with gusts near 20 mph from the W. Thursday winds
will settle to W at 5-8 mph with RHs in the low to mid 30%.

.REST OF TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (70-80 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Min temperature.....53-56.
Max humidity........50-55 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Northeast winds 3 to 5 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southeast around 8 mph early in the evening
                    becoming light, then becoming southwest 7 to 10
                    mph late in the evening.
Ventilation Index...Low (100) decreasing to low (30) overnight.

TIME (PDT)      7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............70  65  62  60  59  58  58  58  56  55  55  53
RH..............34  45  48  50  52  50  51  52  53  54  55  55
20 FT wind dir..N   N   N   N   N   N   N   S   N   W   SW  NW
20 FT wind spd..3   2   2   2   2   2   2   3   2   3   3   4
20 FT wind gust.5           4   4   4   4   5   5   5   5   6

.WEDNESDAY...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    sunny (20-30 percent).
CWR.................0 percent.
Chance of lightning.3 percent.
Max temperature.....62-65.
Min humidity........42-47 percent.
Wind (20 ft)........Light winds becoming southwest around 5 mph
                    after 5 AM, then shifting to the
                    northwest 5 to 12 mph with gusts to around 20
                    mph after 11 PM and through the afternoon.
Ridgetop wind.......North winds 3 to 5 mph winds becoming southwest
                    around 7 mph after 5 AM, then shifting to the
                    northwest 7 to 14 mph with gusts to around 25
                    mph after 11 PM and through the afternoon
Mixing height.......3700 ft AGL.
Transport winds.....West 10 to 18 mph increasing to around 20 mph
                    late in the afternoon.
Ventilation Index...Low (90) increasing to moderate (450) in the
                    afternoon.

.WEDNESDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
CWR.................0 percent.
Chance of lightning.3 percent.
Min temperature.....43-46.
Max humidity........73-78 percent.
Wind (20 ft)........West winds 5 to 12 mph. Gusts up to 24 mph in
                    the evening.
Ridgetop wind.......West winds 7 to 14 mph. Gusts up to 30 mph in
                    the evening.
Mixing height.......600 ft AGL.
Transport winds.....West 13 to 20 mph.
Ventilation Index...Moderate (300) decreasing to low (90)
                    overnight.

.THURSDAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....61-64.
Min humidity........31-36 percent.
Wind (20 ft)........West winds 5 to 8 mph.
Ridgetop wind.......West winds 7 to 10 mph.
Mixing height.......4000 ft AGL.
Transport winds.....West 12 to 14 mph.
Ventilation Index...Low (120) increasing to moderate (370) in the
                    afternoon.

$$
Forecaster...Bennese
Requested by...Shaw Geletka
Type of request...WILDFIRE
.TAG 2614874.0/PDT
.DELDT 06/02/26
.FormatterVersion 2.0.0
.EMAIL waccc@firenet.gov