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Burn Recommendations

Last Updated: 2026-10-19 13:26:41.504702 MST
Idaho
All proposals approved.
Montana

Restricted-New Acquisition PCT 4 Unit 7

Conditional Approval- Springboard-complete burn by 4pm 

All other proposals approved.


Meteorology/Dispersion Discussion

Last Updated: 2026-10-19 21:21:49.492319 MST

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

High pressure over the western part of the Plains will keep more stable conditions over MT and north ID while  southerly flow aloft keeps slightly more unstable conditions over central and southern ID. This pattern breaks down late week as low pressure pushes towards the region from California. 

A weak front passing through the area on Tuesday brings slightly cooler temperatures mainly for MT. Light winds and stronger inversions with POOR dispersion in MT and central and northern ID. FAIR to GOOD dispersion in southern ID with warmer temperatures and better valley winds.  

Winds increase on Wednesday behind a disturbance moving through Canada for central and southwest MT.  MT east of the Continental Divide and  central and southern ID FAIR to GOOD dispersion. North ID and western MT inversions stay strong with cool air trapped at the surface with POOR to FAIR dispersion. 

Upper level high pressure begins to break down on Thursday and a warm front moves east of the Continental Divide. Dispersion continues to be FAIR to GOOD for central and eastern MT. Northwest MT inversions strengthened by warm air aloft and light winds for POOR dispersion. Clouds increasing over ID reducing most dispersion to POOR to FAIR except FAIR to GOOD extreme southwest ID. 

Storm system develops over central MT on Friday with gusty winds. Despite clouds and cooler temperatures most places FAIR to GOOD dispersion. 

 Dan Borsum - NRCC Meteorologists

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