239
FNUS76 KOTX 241656
FWSOTX
SPOT FORECAST FOR TIMBER RIDGE...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
956 AM PDT FRI JUL 24 2026
FORECAST IS BASED ON FORECAST START TIME OF 1000 PDT ON JULY 24.
..RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM PDT SATURDAY
DISCUSSION
CONDITIONS REMAIN WARM AND BREEZY TODAY WITH SOUTHWEST WIND GUSTS INCREASING
IN THE EARLY AFTERNOON TO 15-20 MPH. A DRY COLD FRONT WILL MOVE THROUGH
SATURDAY, WHICH WILL ALLOW TEMPERATURES TO DECREASE BY A FEW DEGREES BUT
WILL INCREASE WINDS OUT OF THE SOUTHWEST AND BRING CRITICAL FIRE WEATHER
CONDITIONS TO THE FIRE AREA. BY MIDDAY SATURDAY, WIND GUSTS ARE EXPECTED
TO REACH 30 MPH WITH TRANSPORT WINDS ANTICIPATED TO REACH 40 MPH. MINIMUM
RELATIVE HUMIDITY VALUES OF 25-30 PERCENT WILL BE REACHED VERY EARLY SATURDAY
MORNING.
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.........SUNNY. AREAS OF SMOKE AND HAZE THROUGH THE DAY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 3-5 MPH BECOMING 8-12 MPH WITH GUSTS
15-20 MPH AROUND 1400.
MIXING HEIGHT.......INCREASING TO 8500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH INCREASING TO AROUND 25 MPH
AROUND 1400.
VENTILATION INDEX...MODERATE (424) INCREASING TO VERY HIGH (1241)
IN THE AFTERNOON.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR. HAZE AND AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 62.
MAX HUMIDITY........30-35 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5-10 MPH WITH GUSTS 15-20 MPH.
MIXING HEIGHT.......FALLING TO NEAR SURFACE AROUND 2000.
TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH.
VENTILATION INDEX...VERY HIGH (1105) DECREASING TO LOW (35)
OVERNIGHT.
SATURDAY
SKY/WEATHER.........SUNNY. AREAS OF SMOKE AND HAZE THROUGH THE DAY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........25-30 PERCENT, OCCURRING EARLY AROUND 0600-0800.
WIND (20 FT)........SOUTHWEST WINDS 5-10 MPH WITH GUSTS 15-20 MPH AND INCREASING
TO 15-25 MPH WITH GUSTS 30-35 MPH AROUND 1200.
MIXING HEIGHT.......INVERSION BREAKING AROUND 0800 AND INCREASING TO
7500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH INCREASING TO AROUND 35-40 MPH AROUND
1200.
VENTILATION INDEX...VERY HIGH (1273) INCREASING TO VERY HIGH (2034)
IN THE AFTERNOON.
FORECASTER...AS/DB
REQUESTED BY...JASON HEADLEY
TYPE OF REQUEST...WILDFIRE
.TAG 2618126.0/OTX
.DELDT 07/24/26
.FORMATTERVERSION 2.0.0
.EMAIL JASON.HEADLEY@USDA.GOV
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