578
FNUS76 KOTX 251156
FWSOTX
SPOT FORECAST FOR TIMBER RIDGE...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
456 AM PDT SAT JUL 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON JULY 25.
...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 10 PM
PDT THIS EVENING...
DISCUSSION
A DRY COLD FRONT MOVING THROUGH THE REGION WILL BRING LOW
HUMIDITIES AND INCREASING SOUTHWESTERLY WINDS AT THE FIRE
LOCATION THROUGH THIS AFTERNOON. WINDS WILL RELAX IN THE EVENING
AND BECOME LIGHT OVERNIGHT. LIGHTER WINDS WILL THEN PREVAIL
THROUGH SUNDAY WITH SLIGHTLY HIGHER HUMIDITY VALUES.
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.........MOSTLY SUNNY. AREAS OF SMOKE IN THE MORNING.
HAZE THROUGH THE DAY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 77-79.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH THROUGH ABOUT 0900
HOURS. WINDS THEN STEADILY INCREASE TO 14 TO 18
MPH THROUGH 1400 HOURS. GUSTS TO 35 MPH POSSIBLE
DURING THE AFTERNOON. WIND SPEEDS SLOWLY DECREASE
AFTER 1700 HOURS.
MIXING HEIGHT.......6500 FT AGL INCREASING TO 8500 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 13 MPH INCREASING TO SOUTHWEST
AROUND 26 MPH IN THE AFTERNOON.
VENTILATION INDEX...VERY HIGH (1304) INCREASING TO VERY HIGH (2011)
IN THE AFTERNOON.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR. HAZE AND AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 50-53.
MAX HUMIDITY........60-65 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 13 MPH WITH GUSTS TO
AROUND 25 MPH THROUGH ABOUT 2100 HOURS. WINDS
THEN BECOME LIGHT 3 TO 5 MPH THROUGH 0100 HOURS.
MIXING HEIGHT.......7500 FT AGL FALLING TO 500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 16 MPH.
VENTILATION INDEX...VERY HIGH (1699) DECREASING TO LOW (33)
OVERNIGHT.
SUNDAY
SKY/WEATHER.........SUNNY. AREAS OF SMOKE IN THE MORNING. HAZE
THROUGH THE DAY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 72-74.
MIN HUMIDITY........23-27 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 11 MPH.
MIXING HEIGHT.......4500 FT AGL INCREASING TO 7500 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....SOUTH 8 TO 15 MPH.
VENTILATION INDEX...MODERATE (448) INCREASING TO VERY HIGH (998) IN
THE AFTERNOON.
FORECASTER...PP
REQUESTED BY...JASON HEADLEY
TYPE OF REQUEST...WILDFIRE
.TAG 2618167.0/OTX
.DELDT 07/25/26
.FORMATTERVERSION 2.0.0
.EMAIL JASON.HEADLEY@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page