878
FNUS76 KOTX 282057
FWSOTX
SPOT FORECAST FOR HAMILTON FIRE...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
157 PM PDT SUN JUN 28 2026
FORECAST IS BASED ON FORECAST START TIME OF 1200 PDT ON JUNE 28.
DISCUSSION
A DEEP LOW PRESSURE SYSTEM EAST OF THE AREA WILL PROMOTE STRONG
DOWNSLOPE WEST-NORTHWEST WINDS TODAY WITH WINDS INCREASING THROUGH
THE MORNING. AFTERNOON GUSTS CAN BE AS HIGH AS 35 MPH FROM THE NORTHWEST.
BREEZY WINDS WILL CONTINUE THROUGH TONIGHT AND MONDAY. RELATIVE HUMIDITY
WILL DROP TO NEAR 30% THIS AFTERNOON BEFORE RECOVERING TO ABOUT
70-75% 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.........PARTLY SUNNY. ISOLATED SHOWERS.
CWR.................10 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 14 TO 22 MPH WITH GUSTS TO
AROUND 33 MPH.
MIXING HEIGHT.......5000 FT AGL INCREASING TO 6500 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 24 MPH.
VENTILATION INDEX...VERY HIGH (922) INCREASING TO VERY HIGH (1173)
IN THE AFTERNOON.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS
THROUGH 2200.
CWR.................20 PERCENT.
CHANCE OF LIGHTNING.10 PERCENT.
MIN TEMPERATURE.....AROUND 51.
MAX HUMIDITY........70-75 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 10 TO 16 MPH WITH GUSTS TO
AROUND 28 MPH DIMINISHING TO 8 TO 15 MPH AFTER 2200.
MIXING HEIGHT.......4000 FT AGL FALLING TO 500 FT AGL DECREASING TO
1000 FT AGL OVERNIGHT.
TRANSPORT WINDS.....NORTHWEST 16 TO 21 MPH.
VENTILATION INDEX...VERY HIGH (862) DECREASING TO LOW (118)
OVERNIGHT.
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........28-33 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 11 MPH WITH GUSTS TO 20 MPH
AFTER 1000.
MIXING HEIGHT.......3000 FT AGL INCREASING TO 4500 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 12 TO 17 MPH.
VENTILATION INDEX...MODERATE (436) INCREASING TO MODERATE (486) IN
THE AFTERNOON.
FORECASTER...AB
REQUESTED BY...AANA KULAAS
TYPE OF REQUEST...WILDFIRE
.TAG 2616377.0/OTX
.DELDT 06/28/26
.FORMATTERVERSION 2.0.0
.EMAIL AANA.KULAAS@USDA.GOV
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