734
FNUS76 KOTX 190125
FWSOTX
SPOT FORECAST FOR UPRIVER FIRE...NEWA IMT 2
NATIONAL WEATHER SERVICE SPOKANE WA
625 PM PDT THU JUN 18 2026
FORECAST IS BASED ON FORECAST START TIME OF 1515 PDT ON JUNE 18.
DISCUSSION
***JUST SENDING THIS SPOT TO CLEAR IT OUT OF OUR SYSTEM TO
PREVENT IT FROM CONTINUING TO ALERT US.
CONDITIONS WILL REMAIN WARM AND DRY. WINDS WILL SHIFT FROM
NORTHEAST TO NORTHWEST TONIGHT, AND RH RECOVERIES WILL BE FAIR. ON
FRIDAY, WINDS WILL START OUT EAST IN THE MORNING, THEN BECOME
MORE NORTHEAST BY AFTERNOON. WINDS WILL REMAIN MOSTLY LIGHT
THROUGH FRIDAY NIGHT, THEN INCREASE THROUGH THE DAY ON SATURDAY.
SATURDAY MORNING THROUGH EVENING WILL BE THE NEXT PERIOD TO
MONITOR AS A DRY COLD FRONT APPROACHES, BRINGING BREEZY WEST WINDS
WITH GUSTS UP TO 25 MPH OVER THE FIRE. RHS WILL DROP INTO THE MID
TEENS EACH AFTERNOON WITH FAIR RECOVERIES 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).
***************************************************************
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........57-61 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 4 TO 7 MPH BECOMING NORTHWEST
1 TO 4 MPH AFTER 0200 PDT.
MIXING HEIGHT.......FALLING TO 500 FT AGL AROUND 2000 PDT.
TRANSPORT WINDS.....NORTHEAST 5 TO 8 MPH.
VENTILATION INDEX...HIGH (693) DECREASING TO LOW (30) OVERNIGHT.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........14-18 PERCENT.
WIND (20 FT)........EAST WINDS 8 TO 11 MPH IN THE MORNING
BECOMING NORTHEAST 5 TO 8 MPH AFTER NOON PDT.
MIXING HEIGHT.......INCREASING TO 7000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 9 TO 12 MPH.
VENTILATION INDEX...MODERATE (370) REMAINING MODERATE (362) IN
THE AFTERNOON.
FORECASTER...RFKS
REQUESTED BY...SEAN SCHROEDER - PSC3
TYPE OF REQUEST...WILDFIRE
.TAG 2615653.1/OTX
.DELDT 06/18/26
.FORMATTERVERSION 2.0.0
.EMAIL SEAN_SCHROEDER@FIRENET.GOV
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