497
FNUS76 KOTX 251542
FWSOTX
SPOT FORECAST FOR CATARACT PEAK...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
842 AM PDT SAT JUL 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 0900 PDT ON JULY 25.
..RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING
DISCUSSION
A DRY COLD FRONT WILL MOVE THROUGH THE REGION AND BRING LOW
HUMIDITIES AND GUSTY WEST-SOUTHWESTERLY WINDS IN THE AFTERNOON.
GUSTS WILL PEAK AROUND 25 MPH BETWEEN 1500-1900 HOURS. PEAK WINDS
WILL DECREASE AROUND 2000 HOURS, THOUGH WILL REMAIN FROM THE WEST-
SOUTHWEST ABOVE 5 MPH THROUGH THE NIGHT. TEMPERATURES WILL COOL ON
SUNDAY WITH RHS TRENDING UP BY AROUND 5%. WINDS WILL BECOME
BREEZY ON AGAIN SUNDAY AFTERNOON WITH GUSTS UP TO 18 MPH.
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.........SMOKE IN THE MORNING WITH HAZE THROUGH THE DAY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....81.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 9 MPH IN THE MORNING
INCREASING TO SOUTHWEST 9 TO 13 MPH AROUND
1400 HOURS. GUSTS UP TO 25 MPH IN THE AFTERNOON.
MIXING HEIGHT.......7000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 5 TO 9 MPH IN THE MORNING INCREASING TO
SOUTHWEST 10 TO 18 MPH IN THE AFTERNOON.
VENTILATION INDEX...MODERATE (284) INCREASING TO VERY HIGH (1269)
IN THE AFTERNOON.
TONIGHT
SKY/WEATHER.........HAZE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....58.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........WEST-SOUTHWEST WINDS 9 TO 13 MPH WITH GUSTS
UP TO 25 MPH IN THE EVENING. WINDS DECREASING
TO WEST-SOUTHWEST 5 TO 8 MPH AROUND 2000 HOURS.
MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE AROUND 2000 HOURS.
TRANSPORT WINDS.....WEST 11 TO 15 MPH DECREASING TO SOUTHWEST
5 TO 7 MPH OVERNIGHT.
VENTILATION INDEX...VERY HIGH (1036) DECREASING TO LOW (55)
OVERNIGHT.
SUNDAY
SKY/WEATHER.........HAZE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....75.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH. WIND GUSTS UP
TO 18 MPH IN THE AFTERNOON.
MIXING HEIGHT.......6000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 12 TO 15 MPH.
VENTILATION INDEX...MODERATE (414) INCREASING TO VERY HIGH (863) IN
THE AFTERNOON.
FORECASTER...VT
REQUESTED BY...JONATHAN KELLEY
TYPE OF REQUEST...WILDFIRE
.TAG 2618172.0/OTX
.DELDT 07/25/26
.FORMATTERVERSION 2.0.0
.EMAIL JOHNATHAN.KELLEY@USDA.GOV,IDCDC@FIRENET.GOV
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