Airshed
Management
System

Dispersion Discussion March 12 2026

Dan Borsum NRCC Predictive Services Meteorologist  

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

Discussions will be updated Sunday/Tuesday/Thursday and posted to the other days.

Thursday another major wind push across the region with GOOD to EXCELLENT dispersion. 

Friday cooler to colder air tries to work into the region and dispersion will experience a decreasing trend.  but forecasts are uncertain how quickly the cold air will arrive. Northern ID and western MT dense cloud cover and still breezy conditions for POOR to FAIR dispersion. Remainder of ID and MT still windy with GOOD to EXCELLENT dispersion but likely precipitation. 

Saturday another front arrives to bring more wind and GOOD to EXCELLENT dispersion. 

Dispersion Discussion March 13 2026

Dan Borsum NRCC Predictive Services Meteorologist  

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

Discussions will be updated Sunday/Tuesday/Thursday and posted to the other days.

Friday cooler to colder air tries to work into the region and dispersion will experience a decreasing trend.  but forecasts are uncertain how quickly the cold air will arrive. Northern ID and most of MT dense cloud cover and snow but still breezy conditions for POOR to FAIR dispersion. Remainder of ID and southwest MT stronger winds with GOOD to EXCELLENT dispersion. Expect precipitation but warmer temperatures. 

Saturday another front arrives to bring more wind and GOOD to EXCELLENT dispersion with widespread precipitation except for southern ID. Upslope conditions over southern MT may keep smoke lift limited but would should provide some transport. 

Sunday into next week high pressure will begin building into the region from the west. Most of MT will still have a combination of wind and instability for FAIR to GOOD mixing. Northern and central ID will begin to see more stable conditions for POOR to FAIR dispersion. Southern ID warmer with higher mixing heights and valley wind flows for FAIR to GOOD dispersion. 

Pattern looks similar for Monday and Tuesday. 

Dispersion Discussion March 15 2026

Dan Borsum NRCC Predictive Services Meteorologist  

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

Discussions will be updated Sunday/Tuesday/Thursday and posted to the other days.

Monday into Wednesday high pressure will begin building into the region from the west. Most of MT will still have a combination of wind and instability for FAIR to GOOD mixing. Northern and central ID will begin to see more stable conditions for POOR to FAIR dispersion. Southern ID warmer with higher mixing heights and valley wind flows for FAIR to GOOD dispersion.