919
FNUS76 KOTX 111331
FWSOTX
SPOT FORECAST FOR FS SINLAHEKIN...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
631 AM PDT SUN OCT 11 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 PDT ON OCTOBER 11.
DISCUSSION
BREEZY NORTH/NORTHEAST WINDS WILL CONTINUE TODAY AS A LOW
PRESSURE CONTINUES TO DIVE SOUTH. CLOUDS WILL CLEAR OUT LATER THIS
MORNING AS DRIER CANADIAN AIR FILTERS IN. TEMPERATURES WARM
THROUGH THE WEEK AS STRONG HIGH PRESSURE BUILDS.
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).
***************************************************************
TODAY
SKY/WEATHER.........PARTLY CLOUDY BECOMING SUNNY AROUND 1000 HOURS.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....34-50.
MIN HUMIDITY........39-51 PERCENT.
WIND (20 FT)........NORTH/NORTHEAST WINDS 7 TO 12 MPH WITH GUSTS
TO AROUND 22 MPH ON RIDGETOPS.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 14 MPH.
VENTILATION INDEX...HIGH (518) INCREASING TO HIGH (612) IN THE
AFTERNOON.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....24-29.
MAX HUMIDITY........48-67 PERCENT.
WIND (20 FT)........NORTH WINDS 4 TO 8 MPH THE EVENING BECOMING
2 TO 5 MPH.
MIXING HEIGHT.......NEAR SURFACE.
TRANSPORT WINDS.....NORTH 9 TO 11 MPH.
VENTILATION INDEX...LOW (141).
COLUMBUS DAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....40-53.
MIN HUMIDITY........35-41 PERCENT.
WIND (20 FT)........NORTH WINDS AROUND 3 MPH BECOMING UPSLOPE/UPVALLEY
AROUND 1100 HOURS.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 7 MPH.
VENTILATION INDEX...LOW (195).
FORECASTER...DB
REQUESTED BY...MACKENZIE BECKWITH
TYPE OF REQUEST...WILDFIRE
.TAG 2623456.2/OTX
.DELDT 10/11/26
.FORMATTERVERSION 2.0.0
.EMAIL MACKENZIE.BECKWITH@USDA.GOV
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