470
FNUS75 KBOI 272224
FWSBOI
SPOT FORECAST FOR BIG GRASS...OR-VAD
NATIONAL WEATHER SERVICE BOISE ID
424 PM MDT THU AUG 27 2026
FORECAST IS BASED ON FORECAST START TIME OF 1600 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 THURSDAY EVENING
..BREEZY ON FRIDAY WITH LIGHT SHOWERS AND ISOLATED THUNDERSTORMS
DISCUSSION
BREEZY SOUTHWEST WINDS WILL CONTINUE INTO FRIDAY, ALTHOUGH NOT AS
STRONG AS WINDS ON THURSDAY AND HUMIDITY WILL BE HIGHER.
CLOUDS AND EMBEDDED SCATTERED SHOWERS WILL MOVE UP FROM THE
SOUTHWEST THROUGH THE DAY, WITH ISOLATED THUNDERSTORMS DEVELOPING
MAINLY IN THE AFTERNOON AND EVENING. OUTFLOW GUSTS TO AROUND 45
MPH WILL BE POSSIBLE FROM NEARBY THUNDERSTORM ACTIVITY. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS WILL REDEVELOP ON SATURDAY.
BREEZY SOUTHWEST WINDS WILL CONTINUE FRIDAY NIGHT INTO SATURDAY
WITH LOWER DAYTIME HUMIDITY AHEAD OF A DRY COLD FRONT. THE FRONT
IS EXPECTED TO MOVE THROUGH LATE IN THE DAY (LIKELY DURING THE
EVENING) AND SWITCH WINDS TO THE NORTHWEST.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF LIGHT
SHOWERS AND A 15 PERCENT CHANCE OF THUNDERSTORMS.
MAX TEMPERATURE.....71 TO 80.
MIN HUMIDITY........28 TO 38 PERCENT.
CWR.................10 PERCENT.
WIND - 20 FOOT......SOUTHWEST 8 TO 14 MPH WITH GUSTS TO AROUND 22
MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
VENTILATION INDEX...825 EXCELLENT.
FORECASTER...TANGEN
REQUESTED BY...SITL
TYPE OF REQUEST...WILDFIRE
.TAG 2620731.0/BOI
.DELDT 08/27/26
.FORMATTERVERSION 2.0.0
.EMAIL JULIETTE_JEANNE@FIRENET.GOV,LUKE.ROBINSON@NOAA.GOV
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