763
FNUS75 KBOI 291724
FWSBOI
SPOT FORECAST FOR BIG GRASS FIRE...USFS
NATIONAL WEATHER SERVICE BOISE ID
1124 AM MDT WED JUL 29 2026
FORECAST IS BASED ON FORECAST START TIME OF 1200 MDT ON JULY 29.
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.
..HOT, DRY, AND BREEZY AFTERNOON WINDS TODAY THROUGH FRIDAY
..DRY FRONT SATURDAY/SUNDAY BRINGS VERY DRY GUSTY CONDITIONS
DISCUSSION
HIGH PRESSURE ALOFT CONTINUES HOT, DRY, AND BREEZY CONDITIONS
THROUGH FRIDAY. A LOW BUT MENTIONABLE 10% CHANCE OF SHOWERS IN THE
AREA THIS AFTERNOON COULD PRODUCE OUTFLOW GUSTS UP TO 25 MPH, BUT
IS EXPECTED TO STAY EAST OF THE FIRE. AFTERNOON GUSTS UP TO 20
MPH ARE POSSIBLE, STRONGEST OVER RIDGELINES. THIS WEEKEND, A DRY
COLD FRONT WILL BRING VERY DRY RHS AND GUSTY WINDS. SATURDAY AFTER
NOON WINDS WILL BEGIN TO PICK UP TO 20 TO 27 MPH WITH MINIMUM RHS
5-10%. WINDS ARE EXPECTED TO WEAKEN AFTER SUNSET, BUT 15 TO 25
MPH GUSTS REDEVELOP SUNDAY AND MONDAY AFTERNOONS. FOR THE FIRE,
SATURDAY AFTERNOON IS THE PERIOD WITH THE MOST SIGNIFICANT FIRE
WEATHER.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....81 TO 96.
MIN HUMIDITY........12 TO 20 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......NORTH 4 TO 10 MPH WITH GUSTS TO AROUND 16 MPH.
MIXING HEIGHT.......9500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....50 TO 65.
MAX HUMIDITY........37 TO 57 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......NORTHEAST 7 TO 12 MPH
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....83 TO 98.
MIN HUMIDITY........11 TO 19 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......SOUTHWEST 5 TO 11 MPH. GUSTS UP TO 20 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......10500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
FORECASTER...MACFARLANE
REQUESTED BY...MATT BROWN FBAN
TYPE OF REQUEST...WILDFIRE
.TAG 2618438.3/BOI
.DELDT 07/29/26
.FORMATTERVERSION 2.0.0
.EMAIL MATT.BROWN@SCCFD.ORG
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