796
FNUS76 KPDT 110616
FWSPDT
SPOT FORECAST FOR SKYROCKET FIRE...WALLA WALLA COUNTY FIRE DISTRICT 4
NATIONAL WEATHER SERVICE PENDLETON OR
1116 PM PDT THU SEP 10 2026
FORECAST IS BASED ON FORECAST START TIME OF 2300 PDT ON SEPTEMBER 10.
***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
ELEVATED WEST SOUTHWEST WINDS ONGOING WILL
CONTINUE BEFORE STARTING TO TREND DOWN BY 4 AM TONIGHT, EXCEPT
AREAS OF SHELTERING CAN ANTICIPATE WINDS LOWER THAN FORECAST AS
MUCH AS 3-5 MPH. GOOD RH RECOVERY TONIGHT/OVERNIGHT WITH COOLER
CONDITIONS TOMORROW. DRY CONDITIONS IN PLACE TOMORROW AND TOMORROW
NIGHT. LIGHT WIND REGIME TAKES HOLD TOMORROW AFTERNOON INTO
TOMORROW NIGHT.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT) THEN BECOMING
PARTLY CLOUDY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MIN TEMPERATURE.....51-54.
MAX HUMIDITY........75 PERCENT.
WIND (20 FT)........WEST SOUTHWEST WINDS 7 TO 10 MPH GUSTING TO
16 MPH BECOMING SOUTHWEST 5 TO 8 MPH BY 4 AM.
RIDGETOP WIND.......SOUTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 14 MPH.
VENTILATION INDEX...LOW (50).
TIME (PDT) 11P MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............65 62 59 57 55 54 53 51 51 53 55 58
RH..............41 46 54 64 68 70 72 75 71 64 57 52
20 FT WIND DIR..SW SW SW SW SW SW SW S S S S SW
20 FT WIND SPD..9 9 9 8 8 7 6 5 7 8 10 10
20 FT WIND GUST.16 14 14 14
FRIDAY
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)........SOUTHWEST WINDS 5 TO 10 MPH BECOMING 4 TO 6
MPH BY LATE AFTERNOON.
RIDGETOP WIND.......SOUTHWEST 6 TO 12 MPH.
MIXING HEIGHT.......4700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 16 MPH.
VENTILATION INDEX...MODERATE (320).
FRIDAY 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.....50-53.
MAX HUMIDITY........53-58 PERCENT.
WIND (20 FT)........LIGHT SOUTHWEST WINDS 3 TO 5 MPH BECOMING
LIGHT DRAINAGE WINDS OVERNIGHT 1 TO 4 MPH.
RIDGETOP WIND.......SOUTH AROUND 5 MPH BECOMING LIGHT AND VARIABLE.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....LIGHT SOUTHWEST WINDS AROUND 5 MPH SHIFTING TO
THE SOUTH EARLY IN THE MORNING.
VENTILATION INDEX...LOW (50).
FORECASTER...TOWNSEND
REQUESTED BY...BRANDON MCKINNEY
TYPE OF REQUEST...WILDFIRE
.TAG 2621634.0/PDT
.DELDT 09/10/26
.FORMATTERVERSION 2.0.0
.EMAIL SPOTFORECAST@WWFIRE4.COM
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page