666
FNUS76 KPDT 310108
FWSPDT

Spot Forecast for Wildcat...USFS
National Weather Service Pendleton OR
608 PM PDT Sat Aug 30 2025

Forecast is based on forecast start time of 0600 PDT on August 31.
***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 the
   transport wind multiplied by the mixing
   height in 100`s of feet. Index categories
   are a generalized indicator only.***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Warm and dry conditions prevail through the beginning
of the week. Temperatures hover around the mid to high 70s with no
wetting rain expected. Humidity levels drop to the low 30s today
but recover to excellent overnight into the mid 70s. Expecting
humidity levels to drop to a similar range for Monday. Winds
remain light mainly from the south between 5 to 7 mph with normal
upslope/downslope cycles overnight and into the morning hours.

.SUNDAY...

Sky/weather.........Mostly sunny (25-35 percent). Haze.
CWR.................0 percent.
Chance of lightning.6 percent.
Max temperature.....75-80.
Min humidity........30-35 percent.
Wind (20 ft)........Light winds becoming south 5 to 7 mph around
                    11 AM, then shifting to the southwest 4 to 7 mph
                    around 5 PM.
Ridgetop wind.......Light winds 3 to 5 becoming south 7 to 9 mph
                    around 11 AM, then shifting to the southwest 6 to
                    9 mph around 5 PM.
Mixing height.......6200 ft AGL early in the morning.
Transport winds.....Southeast 5 to 10 mph shifting to the south 5
                    to 12 mph late in the afternoon.
Ventilation Index...Poor (50) increasing to good (550) in the
                    afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Chc of ltng (%).0   0   0   0   0   0   0   0   10  10  10  10
Temp............55  55  58  63  68  71  73  75  76  74  73  71
RH..............51  51  49  45  40  37  36  35  34  38  41  48
20 FT wind dir..S   S   E   E   E   SE  SE  SE  S   S   S   SW
20 FT wind spd..4   4   4   4   4   6   6   6   6   6   6   6
20 FT wind gust.6   6   7   7   7   7   7   7   7   7   7

.SUNDAY NIGHT...

Sky/weather.........Partly cloudy (35-45 percent). Haze.
CWR.................0 percent.
Chance of lightning.5 percent.
Min temperature.....54-57.
Max humidity........75-80 percent.
Wind (20 ft)........Downslope/down valley winds 5 to 7 mph.
Ridgetop wind.......Downslope/down valley winds 7 to 9 mph.
Mixing height.......1400 ft AGL early in the evening.
Transport winds.....West 5 to 6 mph.
Ventilation Index...Poor (50) decreasing to poor (30) overnight.

.LABOR DAY...

Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of lightning.2 percent.
Max temperature.....Around 80.
Min humidity........31-36 percent.
Wind (20 ft)........Upslope/up-valley becoming 5 to 7 mph around
                    11 AM, then shifting to the northwest 4 to 7 mph
                    around 8PM.
Ridgetop wind.......Upslope/up-valley becoming 7 to 9 mph around 11 AM,
                    then shifting to the northwest 6 to 9 mph around
                    8PM.
Mixing height.......6800 ft AGL late in the morning.
Transport winds.....West around 5 mph early in the morning becoming
                    light, then becoming southeast 6 to 12 mph late
                    in the morning.
Ventilation Index...Poor (30) increasing to fair (480) in the
                    afternoon.

$$
Forecaster...Day
Requested by...Aana Kulaas
Type of request...WILDFIRE
.TAG 2520977.1/PDT
.DELDT 08/30/25
.FormatterVersion 2.0.0
.EMAIL joseph.landburg@usda.gov,aana_kulaas@firenet.gov