***Montana and Idaho, for all inquiries call Paul Corrigan: 801-440-1350. Jill is out Nov 12-16 2026*** Decision support for member burners including meteorology and notification is in effect for the fall season. It is the responsibility of the burner to review and comply with any/all restrictions/regulations issued by county, state, and tribal coordinators/officials prior to ignition. The ultimate responsibility for the effects of conducting a prescribed fire, including any smoke impacts, lies with the entity conducting the burn. Please change the status of proposals to "complete" on the next business day following the event.
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Airshed charts and summary table can be found here and maps can be found here.
Sunday a disturbance passes through MT with southwest flow getting established over ID. The disturbance will bring shower activity to ID and northwest MT and some breezy conditions but clouds and cooler temperatures will limit mixing. Further east in the rest of MT a bit more sunshine but winds fairly light. POOR to FAIR dispersion most areas due to low mixing heights with POOR dispersion over north ID and northwest MT due to very light winds.
Monday flow pattern becomes amplified with strong southwesterly flow over MT and ID with high pressure building over the plains. High moisture content in the southwest flow aloft will keep shower activity over ID and the western half of MT with clouds over the the remainder over MT. Windier spots along the lee slopes in MT but lighter winds west of Continental Divide. Cooling temperatures will make inversions harder to break. POOR dispersion except POOR to FAIR dispersion parts of central and southwest MT prone to southwest wind patterns.
Tuesday a storm system tracks into ID towards southwest MT which brings more rain and mountain snow and extensive clouds. Winds fairly light with POOR dispersion.
Wednesday into the end of the week a stronger storm system moves into the PacNW with another round of precipitation for ID and much of MT and continued cooling temperatures. A few areas east of the Continental Divide may have stronger winds for FAIR dispersion but in general cool temperatures and clouds and precipitation support POOR dispersion with low mixing heights.
Dan Borsum NRCC meteorologist