567
FNUS76 KPDT 021325
FWSPDT

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

Forecast is based on forecast start time of 0700 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...Moderate to good (55-65 percent) overnight humidity
recoveries this morning will lead to a warmer (+5) but not as dry
(+3%) day today. High pressure in control will keep skies sunny,
but an incoming system will bring more cloud cover tonight through
Wednesday morning. Afternoon winds and ventilation will increase
on Wednesday due to a weak cold front passing around noon.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....74-77.
Min humidity........24-29 percent.
Wind (20 ft)........Light winds becoming east 4 to 8 mph by
                    1000, then becoming light after 1600.
Ridgetop wind.......Light winds becoming east 5 to 10 mph by
                    1000, then becoming light after 1600.
Mixing height.......6300 ft AGL.
Transport winds.....South 9 to 13 mph becoming light.
Ventilation Index...Low (120) increasing to moderate (460) in the
                    afternoon.

TIME (PDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............51     58     65     71     74     73
RH..............47     40     37     32     29     29
20 ft wind......S 4    S 6    SE 7   E 6    E 4    NE 4
20 ft wind gust.8      11     14     12     8      7

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (75-85 percent) after 2100.
CWR.................0 percent.
Chance of lightning.1 percent.
Min temperature.....52-55.
Max humidity........60-65 percent.
Wind (20 ft)........Light downsloping winds.
Ridgetop wind.......Light winds.
Mixing height.......500 ft AGL in the evening then 500 ft AGL early
                    in the morning.
Transport winds.....Light winds becoming west around 7 mph early in
                    the evening, then shifting to the southwest 8
                    to 9 mph late in the evening.
Ventilation Index...Low (90) decreasing to low (30) overnight.

.WEDNESDAY...

Sky/weather.........Cloudy (85-95 percent) then becoming mostly
                    sunny (30-40 percent) after 1400.
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....64-67.
Min humidity........38-43 percent.
Wind (20 ft)........Light downslope/downvalley winds becoming
                    northwest 5 to 10 mph with gusts to around
                    18 mph after noon, peaking between 1500 and
                    1900.
Ridgetop wind.......Light winds becoming northeast 6 to 12 mph
                    with gusts to around 20 mph after noon,
                    peaking between 1500 and 1900.
Mixing height.......4500 ft AGL.
Transport winds.....West 9 to 18 mph.
Ventilation Index...Low (70) increasing to moderate (480) in the
                    afternoon.

$$
Forecaster...Callihan
Requested by...WACCCC
Type of request...WILDFIRE
.TAG 2614805.0/PDT
.DELDT 06/02/26
.FormatterVersion 2.0.0
.EMAIL miles.obrien@usda.gov,shane.d.clifton@usda.gov,waccc@firenet.gov