863 FNUS75 KBOI 172021 FWSBOI Spot Forecast for West Lowman RX Clear Creek 9...USFS National Weather Service Boise ID 221 PM MDT Wed Sep 17 2025 Forecast is based on ignition time of 0800 MDT on September 18. 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. ...WARM AND DRY THROUGH FRIDAY... .DISCUSSION... High pressure will keep warm and dry weather conditions in place through Friday. Clear skies and light terrain driven winds are expected at the burn site on Thursday. Friday will see increased cloud cover with temperatures remaining well above normal. .THURSDAY... Sky/weather.........Sunny. Max temperature.....79 to 84. Min humidity........20 to 25 percent. CWR.................0 percent. Wind - 20 foot......Northeast 3 to 5 mph early in the morning shifting to the southwest in the afternoon. Mixing height.......7000 ft AGL. Transport winds.....Southwest around 5 mph. Ventilation Index...350 fair. .THURSDAY NIGHT... Sky/weather.........Mostly cloudy. Min temperature.....51 to 56. Max humidity........42 to 59 percent. CWR.................0 percent. Wind - 20 foot......Northeast around 5 mph. Mixing height.......200 ft AGL. Transport winds.....Northeast around 5 mph. Ventilation Index...10 poor. .FRIDAY... Sky/weather.........Mostly cloudy. Max temperature.....76 to 81. Min humidity........22 to 27 percent. CWR.................0 percent. Wind - 20 foot......Northeast around 4 mph in the morning shifting to the southwest in the afternoon. Mixing height.......9500 ft AGL. Transport winds.....West around 5 mph. Ventilation Index...475 fair. $$ Forecaster...Groenert Requested by...Christopher Knight Type of request...PRESCRIBED .TAG 2522111.0/BOI .DELDT 09/18/25 .FormatterVersion 2.0.0 .EMAIL christopher.knigh@usda.gov