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All proposals approved.
Dispersion Discussion March 16 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.
CONDITIONS IN SOME VALLEYS MAY VARY DUE TO SNOW COVER PERMITTING FASTER COOLING IN THE LATE AFTERNOON.
Monday warm front moving into ID and western MT with light precipitation in the valleys and some mountain snow. Clouds keeping things cool at low levels for POOR dispersion. More wind in south central and southeast ID for GOOD dispersion. Breezier in central MT for FAIR dispersion but lighter winds in eastern MT for POOR dispersion.
Tuesday wind increases over MT for FAIR to VERY GOOD dispersion. Western ID under developing high pressure for POOR dispersion with stable conditions and light winds. Windier over eastern ID for FAIR to GOOD dispersion.
Wednesday stronger sunshine and warmer temperatures for improved dispersion over ID. Northwest MT still POOR dispersion with inversions harder to break but winds in the rest of MT will bring GOOD to EXCELLENT dispersion.
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.