604
FNUS76 KOTX 031951
FWSOTX
SPOT FORECAST FOR AUTUMN LANE WF...USWFS
NATIONAL WEATHER SERVICE SPOKANE WA
1251 PM PDT MON AUG 3 2026
FORECAST IS BASED ON FORECAST START TIME OF 1300 PDT ON AUGUST 03.
DISCUSSION
DRY CONDITIONS WILL CONTINUE WITH DAYTIME TEMPERATURES TRENDING
WARMER THROUGH THURSDAY AND FRIDAY. LIGHT WINDS TO PERSIST THROUGH
AT LEAST WEDNESDAY. EXPECT LOW RELATIVE HUMIDITIES AGAIN TOMORROW
AFTERNOON, WITH POOR RECOVERY OVERNIGHT.
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).
***************************************************************
REST OF TODAY
SKY/WEATHER.........SUNNY. HAZE AND AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........NEAR 19 PERCENT.
WIND (20 FT)........LIGHT WINDS TO AROUND 5 MPH. THOUGH
VARIABLE, WINDS ARE EXPECTED TO BE
PRIMARILY OUT OF THE NORTH.
MIXING HEIGHT.......8500 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 6 MPH.
VENTILATION INDEX...MODERATE (420).
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR. HAZE AND AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 51.
MAX HUMIDITY........56 TO 64 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS GENERALLY 4 MPH
OR LESS.
MIXING HEIGHT.......7500 FT AGL FALLING TO 500 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING NORTH AROUND 6 MPH
OVERNIGHT.
VENTILATION INDEX...MODERATE (300) DECREASING TO LOW (23)
OVERNIGHT.
TUESDAY
SKY/WEATHER.........SUNNY. AREAS OF HAZE AND SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 84.
MIN HUMIDITY........NEAR 16 PERCENT.
WIND (20 FT)........VARIABLE WINDS 4 TO 7 MPH. THOUGH
VARIABLE, WINDS ARE EXPECTED TO BE
PRIMARILY OUT OF THE NORTHWEST.
MIXING HEIGHT.......6000 FT AGL INCREASING TO 8500 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....NORTH AROUND 6 MPH.
VENTILATION INDEX...MODERATE (310) INCREASING TO HIGH (500) IN THE
AFTERNOON.
FORECASTER...KD
REQUESTED BY...JENNIFER ANDERSON FBAN
TYPE OF REQUEST...WILDFIRE
.TAG 2618851.1/OTX
.DELDT 08/03/26
.FORMATTERVERSION 2.0.0
.EMAIL JENNIFER_R_ANDERSON@NPS.GOV
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