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Burn Recommendations

Last Updated: 2021-05-14 12:32:23.368378 MST
Idaho
No Restrictions 
Montana

No Restrictions


Meteorology/Dispersion Discussion

Last Updated: 2021-05-13 15:26:03.138135 MST

MARGINAL-GOOD smoke dispersion in Idaho and western Montana Today with an upper level ridge of high pressure building over the Northern Rockies/Plains. Light southwest surface winds, except light northeast surface winds in southwest Idaho.  GOOD smoke dispersion in central/eastern Montana with a ridge of high pressure building in. Southeast-south surface winds. 

MARGINAL-GOOD smoke dispersion in Idaho and western Montana Monday with an upper level ridge of high pressure building over the Northern Plains. The panhandle of Idaho and northwest Montana will begin to see southwest flow aloft with increasing west-southwest surface winds, but elsewhere, light northwest-west surface winds are expected. GOOD smoke dispersion in central/eastern Montana with a ridge of high pressure. Southerly surface winds. 

MARGINAL-GOOD smoke dispersion in Idaho and western Montana Tuesday with southwest flow aloft forcing the high pressure ridge into eastern Montana/western North Dakota. Westerly surface winds. Scattered showers and thunderstorms in the southern half of Idaho and in southwest Montana.  GOOD-EXCELLENT smoke dispersion in central/eastern Montana with weak southwest flow aloft breaking down a ridge of high pressure. Moderate southeast surface winds. 

GOOD-EXCELLENT smoke dispersion in Idaho and western Montana Wednesday with strong southwest flow aloft and at the surface. Widespread showers and thunderstorms in the northern half of Idaho and in western Montana.  GOOD-EXCELLENT smoke dispersion in central/eastern Montana with southwest flow aloft and a surface cold front. Moderate-strong northwest surface winds in central Montana but moderate-strong southeast surface winds in eastern Montana. Showers and thunderstorms along the frontal boundary in central Montana.

GOOD smoke dispersion in Idaho and western Montana Thursday with strong west-southwest flow aloft and at the surface. EXCELLENT smoke dispersion in central/eastern Montana with westerly flow aloft/upper level trough of low pressure. Strong northwest surface winds.

GOOD smoke dispersion in Idaho and western Montana Friday with strong southwest flow aloft and at the surface. EXCELLENT smoke dispersion in central/eastern Montana with southwest flow aloft. Strong south-southeast surface winds.

Monday 17 May Dispersion Forecast

MONTANA:

Northwest (AS 1, 2): GOOD in AS 1. EXCELLENT in AS 2.

West Central (AS 3A, 3B, 4, 5, 6): GOOD.

Southwest (AS 7, 8A, 8B):  MARGINAL.

Central/Eastern (AS 9, 10): MARGINAL central. GOOD eastern.

 

IDAHO:

North (AS 11): GOOD.

North Central (AS 12A, 12B, 13): GOOD.

West Central (AS 14, 15): MARGINAL.

East Central (AS 16, 17):  MARGINAL.

Southeast (AS 18, 19, 20): GOOD.

Southwest (AS 21, 22, 23, 24): EXCELLENT.

Prepared by Coleen Haskell, NRCC Meteorologist