Airshed
Management
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Burn Recommendations

Last Updated: 2026-09-22 06:11:47.818837 MST
Idaho
All proposals approved.
Montana

All proposals approved.


Meteorology/Dispersion Discussion

Last Updated: 2026-09-21 21:18:17.274723 MST

Airshed charts and summary table can be found here and maps can be found here.

Tuesday warmer surface temperatures and a less stable airmass will support FAIR dispersion but winds will be fairly light except over northwest MT and the northern part of the Panhandle.  

Wednesday weak front crosses the region with increased winds and weak inversion for GOOD to VERY GOOD dispersion except north ID. In north ID clouds my limit surface heating with winds weaker and POOR to FAIR dispersion. 

Thursday will be the warm with mostly sunny skies so expect surface heating to support good mixing with mostly GOOD to VERY GOOD dispersion. 

Friday a disturbance moving into the PacNW increases southwest flow aloft and makes the airmass unstable. Deep mixing will support strong winds in some areas for GOOD to EXCELLENT dispersion. 


Dan Borsum - NRCC Meteorologist

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