255
FNUS75 KBOI 171353
FWSBOI
SPOT FORECAST FOR BEAR RUN PILES...USFS
NATIONAL WEATHER SERVICE BOISE ID
653 AM MST WED DEC 17 2025
FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON DECEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE AT (208)334-9060, IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
..WIND ADVISORY IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
DISCUSSION
A POTENT WEATHER SYSTEM WILL BRING RAIN SHOWERS AHEAD OF, AND
ALONG, A COLD FRONT TODAY. SOME SHOWERS MAY BE HEAVY AT TIMES.
SHOWERS WILL TAPER OFF BY EARLY AFTERNOON, IN WHICH SNOW MAY
MIX IN AS SHOWERS ARE ENDING. WINDS WILL BE VERY STRONG, ESPECIALLY
FOR EXPOSED AREAS AND RIDGES. SNOW, THEN RAIN, EXPECTED THURSDAY.
TODAY
SKY/WEATHER.........RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE MORNING. A SLIGHT
CHANCE OF SNOW/MIX AS PRECIPITATION IS ENDING.
CHANCE OF PRECIPITATION NEAR 100 PERCENT.
LITTLE OR NO NEW SNOW ACCUMULATION.
MAX TEMPERATURE.....46 TO 51.
MIN HUMIDITY........56 TO 61 PERCENT.
CWR.................30 PERCENT.
WIND - 20 FOOT......WINDS INCREASING THIS MORNING. BECOMING
SOUTHWEST 10 TO 18 MPH. GUSTS TO 30 TO 45 MPH
BEGINNING MID MORNING, HIGHEST OVER EXPOSED AREAS AND
RIDGE TOPS. TRANSITIONING TO NORTHWEST LATE MORNING.
WINDS DECREASING TO NORTHWEST 8 TO 16 MPH
WITH GUSTS OF 20 TO 30 MPH IN THE AFTERNOON.
ERRATIC WINDS WITH STORMS LATE IN THE MORNING.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....WESTERLY 30 TO 50 MPH.
VENTILATION INDEX...1650 OR HIGHER. EXCELLENT.
TONIGHT
SKY/WEATHER.........BECOMING MOSTLY CLOUDY.
MIN TEMPERATURE.....20 TO 26.
MAX HUMIDITY........91 TO 100 PERCENT.
CWR.................10 PERCENT.
WIND - 20 FOOT......WINDS RAPIDLY DECREASING IN EVENING. WEST 5 TO
10 MPH AFTER SUNSET. TRANSITIONING TO EASTERLY
OR VARIABLE UP TO 5 MPH OVERNIGHT.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
VENTILATION INDEX...35 POOR.
THURSDAY
SKY/WEATHER.........SNOW. RAIN IN THE AFTERNOON. PATCHY FOG IN THE
AFTERNOON. CHANCE OF PRECIPITATION NEAR 100
PERCENT. SNOW ACCUMULATION OF 1 TO 3 INCHES.
MAX TEMPERATURE.....38 TO 44.
MIN HUMIDITY........90 TO 95 PERCENT.
CWR.................80 PERCENT.
WIND - 20 FOOT......LESS THAN 3 MPH IN THE MORNING BECOMING
GENERALLY SOUTHEAST AROUND 3 TO 7 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
VENTILATION INDEX...300 FAIR.
FORECASTER...HENRY
REQUESTED BY...NICK ADAMSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2527821.0/BOI
.DELDT 12/17/25
.FORMATTERVERSION 2.0.0
.EMAIL NICOLAS.ADAMSON@USDA.GOV
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