420
FNUS75 KBOI 291710
FWSBOI
SPOT FORECAST FOR TARTAR...WILDLAND FIRE SERVICE
NATIONAL WEATHER SERVICE BOISE ID
1110 AM MDT WED JUL 29 2026
FORECAST IS BASED ON FORECAST START TIME OF 0000 MDT ON JULY 30.
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 GUSTY WINDS
DISCUSSION
HIGH PRESSURE KEEPS HOT, DRY, AND BREEZY CONDITIONS IN THE AREA
THROUGH SATURDAY MORNING. OVERNIGHT AND IN THE MORNING, WINDS WILL
BE MOSTLY DIURNAL AND LIGHT. DURING THE AFTERNOON BREEZY NORTH-
NORTHWEST WINDS DEVELOP. SATURDAY AFTERNOON, A DRY COLD FRONT WILL
BRING VERY GUSTY WINDS THROUGH THE REGION. WINDS WILL PICK UP
AFTER NOON ON SATURDAY WITH GUSTS TO 20 MPH BY 3PM, 25 TO 30 MPH
BY 6PM, AND UP TO 35 MPH OVERNIGHT AS THE FRONTAL PASSAGE OCCURS.
WINDS WILL REMAIN GUSTING 15 TO 25 MPH THROUGH AT LEAST MONDAY
MORNING. MINIMUM RELATIVE HUMIDITIES STAY AROUND 15 TO 25% THROUGH
THE WEEKEND, BUT DROP A FEW POINTS EACH DAY. POOR RH RECOVERIES
OVERNIGHT DURING THE EVENT.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....58 TO 63.
MAX HUMIDITY........44 TO 53 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......NORTHEAST 7 TO 12 MPH WITH GUSTS TO AROUND 17
MPH, BECOMING 0 TO 4 MPH VARIABLE EARLY IN THE
MORNING.
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 10 TO 15 MPH.
VENTILATION INDEX...10 POOR.
THURSDAY
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....79 TO 85.
MIN HUMIDITY........22 TO 27 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......VARIABLE 3 TO 5 MPH IN THE MORNING SHIFTING TO THE
SOUTHWEST AROUND 5 MPH IN THE AFTERNOON.
MIXING HEIGHT.......9000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
VENTILATION INDEX...900 EXCELLENT.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....58 TO 63.
MAX HUMIDITY........40 TO 47 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......NORTHWEST 5 TO 10 MPH WITH RIDGELINE GUSTS TO 16 MPH.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 10 TO 15 MPH.
VENTILATION INDEX...30 POOR.
FORECASTER...MACFARLANE
REQUESTED BY...MICHAEL PAGOAGA
TYPE OF REQUEST...WILDFIRE
.TAG 2618581.0/BOI
.DELDT 07/30/26
.FORMATTERVERSION 2.0.0
.EMAIL BRADLEY_SHOEMAKER@IOS.DOI.GOV,MICHAEL_PAGOAGA@FWS.GOV
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