Airshed
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Burn Recommendations

Last Updated: 2023-03-29 11:59:29.283698 MST
Idaho
No Proposals
Montana
No Restrictions 

Meteorology/Dispersion Discussion

Last Updated: 2023-03-29 14:11:51.869494 MST

Friday: Pattern change with southwesterly flow aloft developing over the region. Snow cover may still cause morning inversion., Areas with stronger winds but moist flow into the mountains of central ID  and parts of western MT. Northern ID and northwest and west central MT MARGINAL to GOOD dispersion with southwest winds but shower activity. Central and southern ID POOR to MARGINAL dispersion with westerly winds and mountain snow and valley rain. Southwest MT and eastern MT POOR to MARGINAL dispersion with lighter winds. GOOD dispersion central MT with downsloping winds.

 

Saturday: Strong southwest flow aloft bringing windy conditions to many areas with weak inversions. Widespread mountain snow and rain for ID and western MT. Less precipitation for the valley. Downsloping conditions in the lee of the mountains in central MT. GOOD to EXCELLENT dispersion though burning conditions will be challenging in areas of precipitation.

 

Sunday: Strong cold front expected to cross through the region continuing to bring breezy conditions and limited inversion formation. Mountain snow shower activity. GOOD to EXCELLENT dispersion.

 

Friday 31 March Dispersion Forecast

 

MONTANA
Northwest (AS 1, 2): GOOD.
West Central (AS 3A, 3B, 4, 5, 6): MARGINAL.
Southwest (AS 7, 8A, 8B) : MARGINAL.
Central/Eastern (AS 9, 10): GOOD central...POOR east.

IDAHO
North (AS 11): GOOD.
North Central (AS 12A, 12B, 13): MARGINAL.
West Central (AS 14, 15): POOR.
East Central (AS 16, 17): POOR.
Southeast (AS 18, 19, 20): POOR.
Southwest (AS 21, 22, 23, 24): MARGINAL.