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Dispersion Discussion March 17 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.
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.
Thursday warm temperatures good sunshine for GOOD to EXCELLENT dispersion most areas. Still breezy over MT. North ID may have some morning fog which will slow warming and produce POOR to FAIR dispersion.