796
FNUS76 KPDT 111100
FWSPDT

Spot Forecast for SKYROCKET FIRE...WALLA WALLA COUNTY FIRE DISTRICT 4
National Weather Service Pendleton OR
400 AM PDT Fri Sep 11 2026

Forecast is based on forecast start time of 0600 PDT on September 11.
***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...Dry weather is expected through early Saturday afternoon, with
rain developing late Saturday afternoon into Saturday night.  A thunderstorm
can not be ruled out Saturday afternoon or evening but chances are very low
(<15 percent).  Wetting rain chances will increase to greater than 60 percent
late Saturday afternoon and higher (>80 percent) Saturday night.

It will be a bit breezy this morning, but then winds will become light this
afternoon.  Winds should then be 10 mph or less through Saturday.

MIN RH values will be around 25 percent today and 30 to 35 percent on Saturday,
with moderate overnight recoveries.

.TODAY...

Sky/weather.........Mostly sunny (35-45 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....70-73
Min humidity........22-27 percent.
Wind (20 ft)........South to southwest winds 10 to 15 mph in the morning,
                    becoming light in the afternoon.
Ridgetop wind.......West winds 15 to 20 mph early, decreasing to
                    5 to 10 mph and becoming southwest in the afternoon.
Mixing height.......4700 ft AGL.
Transport winds.....Southwest 7 to 16 mph becoming light.
Ventilation Index...Low (120) increasing to moderate (320) 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   0   0   0   0
Temp............51  51  53  55  58  61  64  65  66  68  68  68
RH..............75  71  64  57  52  45  40  37  34  30  28  27
20 FT wind dir..S   S   S   S   SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..10  10  11  11  12  11  10  8   7   6   5   4
20 FT wind gust.    11  12  13  14  14  12  11  10  8   6   5

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (70-80 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....50-53.
Max humidity........53-58 percent.
Wind (20 ft)........Light winds becoming east 5 to 7 mph early in
                    the evening, then becoming light overnight.
Ridgetop wind.......Southwest winds 5 to 10 mph, becoming southeast.
Mixing height.......500 ft AGL.
Transport winds.....Light winds becoming east 5 to 7 mph early in
                    the evening, then shifting to the south around
                    6 mph early in the morning.
Ventilation Index...Low (50) decreasing to low (30) overnight.

.SATURDAY...

Sky/weather.........Cloudy (95-100 percent) then becoming partly
                    sunny (55-65 percent). Rain showers likely
                    (70 percent) late in the afternoon (after 4 PM).
CWR.................0 percent increasing to 62 percent late in the
                    afternoon.
Chance of lightning.10 percent.
Max temperature.....72-75.
Min humidity........30-35 percent.
Wind (20 ft)........Light winds becoming northwest 5 to 8 mph late
                    in the afternoon.
Ridgetop wind.......East to southeast winds 5 to 10 mph.
Mixing height.......3500 ft AGL.
Transport winds.....South 5 to 6 mph shifting to the southwest 5 to
                    8 mph late in the morning.
Ventilation Index...Low (30) increasing to low (140) in the
                    afternoon.

$$
Forecaster...Nierenberg
Requested by...BRANDON MCKINNEY
Type of request...WILDFIRE
.TAG 2621634.1/PDT
.DELDT 09/11/26
.FormatterVersion 2.0.0
.EMAIL spotforecast@wwfire4.com