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All proposals approved.
Airshed charts and summary table can be found here and maps can be found here.
Thursday high pressure builds over the western Great Basin which stabilizes the airmass over north ID and western MT for POOR dispersion. Not as stable east of the Continental Divide and better chance to break inversions over southern ID for FAIR dispersion.
Friday a disturbance tracks across Alberta which weakens inversions and increases wind especially in most of MT and southern and central ID. POOR to FAIR dispersion over northern ID as inversions will be stronger with cooler temperatures. Eastern MT under strong high pressure for light winds for POOR to FAIR dispersion but GOOD to VERY GOOD dispersion other locations.
Saturday high pressure develops quickly over ID with stable conditions and light winds for ID and western MT. This pattern persists into Sunday. Dispersion POOR to FAIR over ID and western MT with better dispersion east of the Divide FAIR to GOOD.
Dan Borsum - NRCC Meteorologist