482
FNUS75 KBOI 221904
FWSBOI
SPOT FORECAST FOR TUMBLEWEED_RX...USFWS
NATIONAL WEATHER SERVICE BOISE ID
1204 PM MST THU JAN 22 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON JANUARY 22.
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.
..DRY COLD FRONT WILL END THE INVERSION FRIDAY MORNING
DISCUSSION
INVERSION WITH LOW CLOUDS, LOW MIXING HEIGHT, AND POOR VENTILATION,
WILL END AROUND NOON FRIDAY AS A DRY COLD FRONT PASSES THROUGH FROM
THE NORTH/NORTHWEST. NORTHWEST WINDS WILL INCREASE BEHIND THE FRONT
AND SCOUR THE STAGNANT AIR WHILE ALSO IMPROVING MIXING AND VENTILATION.
REST OF TODAY
SKY/WEATHER.........CLOUDY.
MAX TEMPERATURE.....33 TO 38.
MIN HUMIDITY........64 TO 71 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......SOUTHEAST 3 TO 5 MPH.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 0 MPH.
VENTILATION INDEX...0 POOR.
TONIGHT
SKY/WEATHER.........CLOUDY.
MIN TEMPERATURE.....23 TO 28.
MAX HUMIDITY........94 TO 99 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......WEST AROUND 3 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
VENTILATION INDEX...20 POOR.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY.
MAX TEMPERATURE.....33 TO 38.
MIN HUMIDITY........80 TO 85 PERCENT.
CWR.................0 PERCENT.
WIND - 20 FOOT......NORTHWEST 4 TO 10 MPH. GUSTS UP TO 16 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
VENTILATION INDEX...375 FAIR.
FORECASTER...COLIN
REQUESTED BY...BRYSON GUNDLACH
TYPE OF REQUEST...PRESCRIBED
.TAG 2600899.0/BOI
.DELDT 01/22/26
.FORMATTERVERSION 2.0.0
.EMAIL BRYSON_GUNDLACH@FWS.GOV
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