508
FNUS76 KOTX 230332
FWSOTX
SPOT FORECAST FOR WASHINGTON...WA DNR
NATIONAL WEATHER SERVICE SPOKANE WA
832 PM PDT SAT AUG 22 2026
FORECAST IS BASED ON FORECAST START TIME OF 0800 PDT ON AUGUST 23.
DISCUSSION
CONDITIONS DRY OUT SUNDAY ON THE BACK SIDE OF THE WEATHER SYSTEM
THAT CAME THROUGH BUT WEST WINDS WILL REMAIN BREEZY OUT OF THE
CASCADE GAPS. A WARMING AND DRYING TREND COMMENCES MONDAY AND
TUESDAY WITH LIGHTER, TERRAIN DRIVEN WINDS.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
***************************************************************
FORECASTS FOR 20 FOOT WIND SPEEDS (VALLEYS AND RIDGE TOPS) ARE
10 MINUTE AVERAGES REFLECTING RAWS WIND.
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT DIVIDED BY 100.
CATEGORIES: LOW (< 200), MODERATE (200-500),
HIGH (500-800), AND VERY HIGH (> 800).
***************************************************************
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY. AREAS OF SMOKE IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....78.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH. GUSTS UP TO 15 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WINDS.....WEST 9 TO 10 MPH.
VENTILATION INDEX...MODERATE (459) INCREASING TO HIGH (667) IN THE
AFTERNOON.
SUNDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....57.
MAX HUMIDITY........55 PERCENT.
WIND (20 FT)........NORTHWEST WINDS AROUND 5 MPH IN THE EVENING
BECOMING LIGHT AND VARIABLE 1 TO 3 MPH
AROUND 2300.
MIXING HEIGHT.......NEAR SURFACE.
TRANSPORT WINDS.....NORTHWEST 6 TO 8 MPH.
VENTILATION INDEX...MODERATE (470) DECREASING TO LOW (28)
OVERNIGHT.
MONDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....83.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........EAST WINDS 2 TO 4 MPH.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON.
VENTILATION INDEX...MODERATE (257).
FORECASTER...DB
REQUESTED BY...RYAN DOOP
TYPE OF REQUEST...WILDFIRE
.TAG 2620278.0/OTX
.DELDT 08/22/26
.FORMATTERVERSION 2.0.0
.EMAIL RYAN.DOOP@DNR.WA.GOV
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