547
FNUS76 KOTX 251809
FWSOTX
SPOT FORECAST FOR PORCUPINE...USFS
NATIONAL WEATHER SERVICE SPOKANE WA
1109 AM PDT SAT JUL 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 1300 PDT ON JULY 25.
..RED FLAG WARNING IN EFFECT UNTIL 10 PM PDT THIS EVENING
DISCUSSION
A DRY COLD FRONT MOVING THROUGH THE REGION WILL BRING LOW
HUMIDITIES AND INCREASING SOUTHWESTERLY WINDS AT THE FIRE LOCATION
THROUGH THIS AFTERNOON. WINDS WILL STAY ELEVATED OVERNIGHT. WINDS
SUNDAY WILL REMAIN BREEZY WITH SLIGHTLY HIGHER HUMIDITY VALUES.
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).
***************************************************************
TODAY
SKY/WEATHER.........SUNNY. HAZE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....76.
MIN HUMIDITY........26-33 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 12 TO 18 MPH WITH GUSTS TO
AROUND 25 MPH.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
VENTILATION INDEX...VERY HIGH (1391).
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR. HAZE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....54.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 14 MPH WITH GUSTS TO
AROUND 23 MPH.
MIXING HEIGHT.......FALLING TO NEAR SURFACE AROUND 2000 HOURS.
TRANSPORT WINDS.....SOUTHWEST 11 TO 16 MPH.
VENTILATION INDEX...VERY HIGH (1155) DECREASING TO LOW (54)
OVERNIGHT.
SUNDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....71.
MIN HUMIDITY........31-35 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 10 MPH. GUSTS UP TO 18 MPH
IN THE AFTERNOON.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 11 TO 16 MPH.
VENTILATION INDEX...MODERATE (303) INCREASING TO HIGH (754) IN THE
AFTERNOON.
FORECASTER...DB
REQUESTED BY...CRYSTAL TAYLOR
TYPE OF REQUEST...WILDFIRE
.TAG 2618210.0/OTX
.DELDT 07/25/26
.FORMATTERVERSION 2.0.0
.EMAIL IDCDC@FIRENET.GOV
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