299
FNUS76 KOTX 031645
FWSOTX
SPOT FORECAST FOR ST. JOE DIVIDE RX...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
945 AM PDT SAT OCT 3 2026
FORECAST IS BASED ON IGNITION TIME OF 1010 PDT ON OCTOBER 03.
DISCUSSION
HIGH PRESSURE WILL PROMOTE WARM TEMPERATURES, DRY CONDITIONS, AND
LIGHT, TERRAIN-DRIVEN WINDS OVER THE BURN SITE THROUGH THE
WEEKEND. MINIMUM RHS WILL FALL INTO THE UPPER 20S TO LOW 30S EACH
AFTERNOON, AND OVERNIGHT RECOVERIES WILL BE FAIR. INVERSIONS WILL
BE SLOW TO LIFT IN THE 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).
***************************************************************
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........31-36 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 4-7 MPH SHIFTING WEST 2-5 MPH
AFTER 1500 HOURS.
MIXING HEIGHT.......INCREASING TO 4500 FT AGL BY 1400 HOURS.
TRANSPORT WINDS.....SOUTHEAST 7-10 MPH.
VENTILATION INDEX...LOW (190).
TONIGHT
SKY/WEATHER.........CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........63-68 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 4-7 MPH SHIFTING NORTHEAST
WITH SIMILAR SPEEDS AFTER 2000 HOURS.
MIXING HEIGHT.......FALLING TO NEAR SURFACE AROUND 1830 HOURS.
TRANSPORT WINDS.....NORTHEAST 4-7 MPH.
VENTILATION INDEX...LOW (27).
SUNDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........NORTH WINDS 2-5 MPH SHIFTING SOUTHEAST WITH
SIMILAR SPEEDS AFTER 1000 HOURS, THEN SHIFTING
SOUTHWEST WITH SIMILAR SPEEDS AFTER 1300 HOURS.
MIXING HEIGHT.......INVERSION LIFTING AROUND 0900 HOURS. MIXING
HEIGHT INCREASING TO 5000 FT AGL BY 1400 HOURS.
TRANSPORT WINDS.....SOUTHWEST 11-17 MPH.
VENTILATION INDEX...LOW (117) INCREASING TO MODERATE (469) IN THE
AFTERNOON.
FORECASTER...RFKS
REQUESTED BY...MARSHALL MYHRE
TYPE OF REQUEST...PRESCRIBED
.TAG 2622970.1/OTX
.DELDT 10/03/26
.FORMATTERVERSION 2.0.0
.EMAIL MARSHALL.MYHRE@USDA.GOV
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