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Dispersion Discussion March 18 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.
Wednesday stronger sunshine and warmer temperatures for improved dispersion over most of central and southern ID. Northwest MT and parts of west central ID and the Panhandle of ID still POOR dispersion with inversions harder to break. Rest of MT good mixing and breezy with GOOD to EXCELLENT dispersion.
Thursday and Friday 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.
Saturday upper level high pressure weakens a bit to increase wind over western MT. Most of ID warm with good mixing heights except sheltered valleys in central ID where light winds will slow mixing.