Airshed
Management
System

Dispersion Discussion April 14 2026

Dan Borsum NRCC Predictive Services Meteorologist  

Smoke Dispersion Maps and charts on the NRCC Website will be updated MTWTF. 

Approach of a deep low pressure system midweek creates increasing pressure gradients on Tuesday and supports breezy conditions. A bit less cloud cover possible to promote better surface warming. GOOD to EXCELLENT dispersion. 

Wednesday pressures fall over MT to support unstable conditions for most areas except pockets of less wind over northwest MT and north ID. GOOD to VERY GOOD dispersion except northwest MT and the northern part of the Panhandle with POOR to FAIR dispersion where temperatures will be cooler.

Thursday cold front working through the region but expect clouds and precipitation and cooler temperatures. Sufficient wind for FAIR to GOOD dispersion. 

Dispersion Discussion April 15 2026

Dan Borsum NRCC Predictive Services Meteorologist  

Smoke Dispersion Maps and charts on the NRCC Website will be updated MTWTF. 

Wednesday pressures fall over MT to support unstable conditions for most areas except pockets of less wind over northwest MT and north ID. GOOD to VERY GOOD dispersion except northwest MT and the northern part of the Panhandle with POOR to FAIR dispersion where temperatures will be cooler.

Thursday cold front working through the region but expect clouds and precipitation and cooler temperatures. Sufficient wind for FAIR to GOOD dispersion. 

Friday is cool but unstable and expect drier air to support better sunshine with low level warming. This should support GOOD to VERY GOOD dispersion in MT and central and southern ID. A few locations may see lighter winds like AS 8A and AS 14 and 15.