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All proposals approved.
Airshed charts and summary table can be found here and maps can be found here.
Upper level high pressure maintains a stable airmass for all of ID and MT today.
A strong disturbance tracking across Canada brings good mixing and windy conditions to a large portion of the region by Saturday. This will present an opportunity to scour most valleys before winds begin to decrease and inversions strengthen Sunday into Monday. Southern ID and eastern MT will hang onto better dispersion for a few days before a more stable regime sets in by Tuesday.