815
FNUS76 KOTX 022221
FWSOTX
SPOT FORECAST FOR PERMIT NE20250289...WASHINGTON DNR
NATIONAL WEATHER SERVICE SPOKANE WA
321 PM PDT FRI OCT 2 2026
FORECAST IS BASED ON IGNITION TIME OF 0000 PDT ON OCTOBER 03.
DISCUSSION
WEAK HIGH PRESSURE BUILDS IN OVER THE WEEKEND, WITH MINOR UPPER
WAVES RIPPLING THROUGH IT. THAT WILL RESULT IN DRY CONDITIONS,
VARIABLE CLOUDS SATURDAY AND MILD TEMPERATURES. WINDS ARE FORECAST
TO BE LIGHT AT THE BURN SITE.
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).
***************************************************************
SATURDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING SUNNY
AROUND 1500-1600.
CWR.................0 PERCENT.
MAX TEMPERATURE.....76.
MIN HUMIDITY........28-33 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 1 TO 3 MPH.
MIXING HEIGHT.......4000 FT AGL. INVERSION BREAKING
AROUND 1000 HOURS.
TRANSPORT WINDS.....EAST AROUND 6 MPH.
VENTILATION INDEX...MODERATE (218).
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....44.
MAX HUMIDITY........80-85 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 1 TO 3 MPH.
MIXING HEIGHT.......FALLING TO NEAR SURFACE AROUND
1800-1900 HOURS.
TRANSPORT WINDS.....NORTHEAST 6 TO 7 MPH.
VENTILATION INDEX...LOW (60).
FORECASTER...DB
REQUESTED BY...MASON FRIEDMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 2622985.0/OTX
.DELDT 10/02/26
.FORMATTERVERSION 2.0.0
.EMAIL MASON.FRIEDMAN@DNR.WA.GOV,SRSOMERS22@GMAIL.COM
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