318
FNUS75 KBOI 272056
FWSBOI
SPOT FORECAST FOR MUSTANG...BLM
NATIONAL WEATHER SERVICE BOISE ID
256 PM MDT THU AUG 27 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON AUGUST 27.
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.
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING
DISCUSSION
CRITICAL RED FLAG CONDITIONS WILL CONTINUE INTO THIS EVENING
WITH WIND GUSTS TO 35 MPH AND HUMIDITY AROUND 10%. CLOUDS INCREASE
TONIGHT WITH A CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
IMPACTING THE FIRE BY EARLY FRIDAY MORNING. STRONGER STORMS ARE
POSSIBLE FRIDAY AFTERNOON WHICH WILL BE CAPABLE OF PRODUCING OUTFLOWS
TO 45 MPH. A LOW CHANCE OF SHOWERS LINGERS THROUGH FRIDAY NIGHT, THEN
DRIER CONDITIONS WILL RETURN FOR THE WEEKEND. SOUTHWEST FLOW WILL
BRING BREEZY WINDS, EVEN OVERNIGHT FROM FRIDAY INTO SATURDAY. A DRY
COLD FRONTAL PASSAGE SATURDAY EVENING WILL SHIFT WINDS TO THE
NORTHWEST.
TONIGHT
SKY/WEATHER.........CLOUDY. A CHANCE OF SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS AFTER MIDNIGHT. CHANCE OF
PRECIPITATION 40 PERCENT.
MIN TEMPERATURE.....62 TO 67.
MAX HUMIDITY........34 TO 39 PERCENT.
CWR.................10 PERCENT.
WIND - 20 FOOT......SOUTHWEST 8 TO 12 MPH WITH GUSTS TO AROUND 20
MPH IN THE EVENING, BECOMING SOUTHWEST 5 TO
9 MPH WITH GUSTS TO 14 MPH OVERNIGHT. GUSTY
AND ERRATIC WINDS POSSIBLE NEAR THUNDERSTORMS.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
VENTILATION INDEX...30 POOR.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. CHANCE OF
PRECIPITATION 40 PERCENT.
MAX TEMPERATURE.....79 TO 84.
MIN HUMIDITY........23 TO 28 PERCENT.
CWR.................20 PERCENT.
WIND - 20 FOOT......SOUTH 11 TO 17 MPH. GUSTS UP TO 16 MPH IN THE
MORNING INCREASING TO 24 MPH IN THE AFTERNOON.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
MIXING HEIGHT.......7500 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 20 MPH.
VENTILATION INDEX...1500 EXCELLENT.
FRIDAY NIGHT
SKY/WEATHER.........CLOUDY. A 20 PERCENT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....55 TO 60.
MAX HUMIDITY........64 TO 69 PERCENT.
CWR.................10 PERCENT.
WIND - 20 FOOT......SOUTH 9 TO 14 MPH WITH GUSTS TO AROUND 22 MPH.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE EVENING.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
VENTILATION INDEX...45 POOR.
SATURDAY
SKY/WEATHER.........PARTLY SUNNY IN THE MORNING, THEN CLEARING.
MAX TEMPERATURE.....80 TO 85.
MIN HUMIDITY........17 TO 22 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......SOUTHWEST 5 TO 9 MPH IN THE MORNING, BECOMING
SOUTHWEST 9 TO 14 MPH WITH GUSTS UP TO 22 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......11500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
VENTILATION INDEX...2300 EXCELLENT.
FORECASTER...GROENERT
REQUESTED BY...ANDREW ROBERTSON
TYPE OF REQUEST...WILDFIRE
.TAG 2620588.3/BOI
.DELDT 08/27/26
.FORMATTERVERSION 2.0.0
.EMAIL ORVAC@FIRENET.GOV
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