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The following burns are restricted Tuesday due to poor dispersion and proximate burning:
AS11: Beauty Cedar GNA Timber, Beauty Cedar GNA Grapple
AS12A: Burma Jct,Bovill Scatter Unit 1,4
AS12B: Pick up Sticks, Witherspoon, Johnny Slide, Lakefront Yard, Big Creek OSR, Harris Ridge, Hodson Draw, Model T Coulee 2025 (200 acre)
All proposal approved.
Burns in Missoula Co. end by 4pm.
Airshed charts and summary table can be found here and maps can be found here.
A disturbance moves through ID tonight and on Tuesday this disturbance moves through western and central MT. Expect stabilizing airmass over ID during the afternoon with decreasing winds though a few areas might still be breezy in the morning. Generally expect POOR dipsersion over ID. Over MT stronger winds with FAIR to GOOD dispersion except far northwest MT AS1 and AS2 where winds will quickly become weak during the afternoon for POOR to FAIR dispersion.
High pressure dominates Wednesday and Thursday for POOR dispersion everywhere with strong inversions and light winds.
Friday a warm front moves through ID and western MT bringing warmer temperatures and increased winds aloft. This causes better mixing most areas with FAIR to GOOD dispersion. Inversions may not break as easily over central and eastern MT and southeast ID for POOR to FAIR dispersion. Cold front overnight will keep inversions from forming until very late which keeps dispersion favorable.
Saturday higher pressure develops over ID and western MT with high level cloud cover to create POOR dispersion. Still breezy over central and eastern MT for POOR to FAIR dispersion.
Dan Borsum NRCC meteorologist