798
FNUS76 KOTX 182120
FWSOTX
SPOT FORECAST FOR MODRITE...SE WA TYPE 3 IMT
NATIONAL WEATHER SERVICE SPOKANE WA
220 PM PDT SUN OCT 18 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 PDT ON OCTOBER 19.
DISCUSSION
MONDAY AND TUESDAY WILL SEE VARIABLE CLOUD COVER WITH A STRETCHING
SYSTEM MOVING INTO THE REGION. THE WEATHER IS EXPECTED TO REMAIN
DRY AND WINDS WILL BE DIURNALLY DRIVEN MONDAY, THEN SLIGHTLY STRONGER
FROM THE NORTH MONDAY NIGHT AND TUESDAY WITH LOW PRESSURE TO THE SOUTH.
TEMPERATURES WILL BE RELATIVELY MILD. DRY WEATHER CONTINUES WEDNESDAY,
THEN RAIN CHANCES ARRIVE LATER IN THE WEEK ALONG WITH INCREASE
WINDS AND COOLING TEMPERATURES.
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).
***************************************************************
MONDAY
SKY/WEATHER.........CLOUDY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....52-59.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........NORTH WINDS 3 TO 6 MPH WITH UP TO 10 MPH ON
RIDGETOPS BECOMING SOUTHEAST 2 TO 5 MPH AFTER
1000...INCREASING TO 4 TO 8 MPH AFTER 1400.
MIXING HEIGHT.......2500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH AROUND 5 MPH SHIFTING TO THE SOUTHWEST IN
THE AFTERNOON.
VENTILATION INDEX...LOW (121).
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....57-63.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 7 MPH.
MIXING HEIGHT.......3000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHEAST AROUND 7 MPH.
VENTILATION INDEX...LOW (182).
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....59-65.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 4 TO 6 MPH.
MIXING HEIGHT.......3000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHEAST AROUND 7 MPH.
VENTILATION INDEX...LOW (182).
FORECASTER...MSC
REQUESTED BY...RYAN SCHARNHORST
TYPE OF REQUEST...WILDFIRE
.TAG 2623982.0/OTX
.DELDT 10/18/26
.FORMATTERVERSION 2.0.0
.EMAIL RYAN_SCHARNHORAT@FIRENET.GOV
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