Airshed
Management
System

MARGINAL-GOOD dispersion Wednesday ID and Western MT with broad trough of low pressure over NW US. Light W-NW surface winds in ID, but NE surface winds in W MT. GOOD-EXCELLENT dispersion Central/Eastern MT with SW flow aloft and  strong NW surface winds.

MARGINAL dispersion Thursday Northern ID and Western MT with trough of low pressure over Central MT. Light NE-E surface winds North ID and Western MT. W-NW surface winds Central and South ID. MARGINAL dispersion Central MT, but GOOD in Eastern MT with strong NW surface winds.

GOOD dispersion Friday ID and Western MT with W/NW flow aloft. W/SW surface winds North ID and Western MT. SW surface winds Central and South ID. GOOD dispersion Central/Eastern MT with westerly flow aloft and SW surface winds.

MARGINAL-GOOD dispersion Saturday ID and Western MT with ridge of high pressure aloft. SW surface winds. MARGINAL dispersion Central MT but GOOD-EXCELLENT in Eastern MT with NW flow aloft.  Light surface winds Central, but W/NW surface winds in Eastern MT.

MARGINAL-GOOD dispersion Sunday ID and Western MT with SW flow aloft. Scattered showers. S/SW surface winds, except E/NE in N ID and NW MT. GOOD-EXCELLENT dispersion Central/Eastern MT with trough of low pressure and cold front in SE MT. Variable surface winds with SE direction in AS 9 but NW direction in AS 10.

GOOD-EXCELLENT dispersion Monday ID and Western MT with SW flow aloft. Scattered showers. SW/W surface winds. GOOD-EXCELLENT dispersion Central/Eastern MT with SW flow aloft and cold front in Eastern MT. Variable surface winds with NE/SE direction in AS 9 but NW direction in AS 10.

Thursday 02 April Dispersion Forecast

MONTANA:

Northwest (AS 1, 2): MARGINAL. 

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

Southwest (AS 7, 8A, 8B): MARGINAL. 

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

IDAHO:

North (AS 11): MARGINAL. 

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

West Central (AS 14, 15, 21A): GOOD. 

East Central (AS 16, 17): GOOD. 

Northeast (AS 18, 19): GOOD. 

Southeast (AS 20): EXCELLENT. 

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

Prepared by Michael Richmond/Coleen Haskell, Meteorologists, Predictive Services, Northern Rockies Coordination Center. 

MARGINAL dispersion Thursday Northern ID and Western MT with trough of low pressure over Central MT. Light NE-E surface winds North ID and Western MT. W-NW surface winds Central and South ID. MARGINAL dispersion Central MT, but GOOD in Eastern MT with strong NW surface winds.

GOOD dispersion Friday ID and Western MT with W/NW flow aloft. W/SW surface winds North ID and Western MT. SW surface winds Central and South ID. GOOD dispersion Central/Eastern MT with westerly flow aloft and SW surface winds.

MARGINAL-GOOD dispersion Saturday ID and Western MT with ridge of high pressure aloft. SW surface winds. MARGINAL dispersion Central MT but GOOD-EXCELLENT in Eastern MT with NW flow aloft.  Light surface winds Central, but W/NW surface winds in Eastern MT.

MARGINAL-GOOD dispersion Sunday ID and Western MT with SW flow aloft. Scattered showers. S/SW surface winds, except E/NE in N ID and NW MT. GOOD-EXCELLENT dispersion Central/Eastern MT with trough of low pressure and cold front in SE MT. Variable surface winds with SE direction in AS 9 but NW direction in AS 10.

GOOD-EXCELLENT dispersion Monday ID and Western MT with SW flow aloft. Scattered showers. SW/W surface winds. GOOD-EXCELLENT dispersion Central/Eastern MT with SW flow aloft and cold front in Eastern MT. Variable surface winds with NE/SE direction in AS 9 but NW direction in AS 10.

Friday 03 April Dispersion Forecast

MONTANA:

Northwest (AS 1, 2): GOOD. 

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

Southwest (AS 7, 8A, 8B): GOOD. 

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

IDAHO:

North (AS 11): GOOD. 

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

West Central (AS 14, 15, 21A): GOOD. 

East Central (AS 16, 17): GOOD. 

Northeast (AS 18, 19): EXCELLENT 

Southeast (AS 20): EXCELLENT. 

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

Prepared by Michael Richmond/Coleen Haskell, Meteorologists, Predictive Services, Northern Rockies Coordination Center. 

GOOD dispersion Friday ID and Western MT with W/NW flow aloft. W/SW surface winds North ID and Western MT. SW surface winds Central and South ID. GOOD dispersion Central/Eastern MT with westerly flow aloft and SW surface winds.

MARGINAL-GOOD dispersion Saturday ID and Western MT with ridge of high pressure aloft. SW surface winds. MARGINAL dispersion Central MT but GOOD-EXCELLENT in Eastern MT with NW flow aloft.  Light surface winds Central, but W/NW surface winds in Eastern MT.

MARGINAL-GOOD dispersion Sunday ID and Western MT with SW flow aloft. Scattered showers. S/SW surface winds, except E/NE in N ID and NW MT. GOOD-EXCELLENT dispersion Central/Eastern MT with trough of low pressure and cold front in SE MT. Variable surface winds with SE direction in AS 9 but NW direction in AS 10.

GOOD-EXCELLENT dispersion Monday ID and Western MT with SW flow aloft. Scattered showers. SW/W surface winds. GOOD-EXCELLENT dispersion Central/Eastern MT with SW flow aloft and cold front in Eastern MT. Variable surface winds with NE/SE direction in AS 9 but NW direction in AS 10.

Saturday 04 April Dispersion Forecast

MONTANA:

Northwest (AS 1, 2): MARGINAL. 

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

Southwest (AS 7, 8A, 8B): GOOD. 

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

IDAHO:

North (AS 11): MARGINAL. 

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

West Central (AS 14, 15, 21A): MARGINAL. 

East Central (AS 16, 17): GOOD. 

Northeast (AS 18, 19): GOOD. 

Southeast (AS 20): GOOD. 

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

Prepared by Michael Richmond/Coleen Haskell, Meteorologists, Predictive Services, Northern Rockies Coordination Center. 

MARGINAL-GOOD dispersion Saturday ID and Western MT with ridge of high pressure aloft. SW surface winds. MARGINAL dispersion Central MT but GOOD-EXCELLENT in Eastern MT with NW flow aloft.  Light surface winds Central, but W/NW surface winds in Eastern MT.

MARGINAL-GOOD dispersion Sunday ID and Western MT with SW flow aloft. Scattered showers. S/SW surface winds, except E/NE in N ID and NW MT. GOOD-EXCELLENT dispersion Central/Eastern MT with trough of low pressure and cold front in SE MT. Variable surface winds with SE direction in AS 9 but NW direction in AS 10.

GOOD-EXCELLENT dispersion Monday ID and Western MT with SW flow aloft. Scattered showers. SW/W surface winds. GOOD-EXCELLENT dispersion Central/Eastern MT with SW flow aloft and cold front in Eastern MT. Variable surface winds with NE/SE direction in AS 9 but NW direction in AS 10.

Sunday 05 April Dispersion Forecast

MONTANA:

Northwest (AS 1, 2): MARGINAL. 

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

Southwest (AS 7, 8A, 8B): GOOD. 

Central/Eastern (AS 9, 10): GOOD in AS 10, EXCELLENT in AS 9. 

IDAHO:

North (AS 11): MARGINAL. 

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

West Central (AS 14, 15, 21A): MARGINAL. 

East Central (AS 16, 17): GOOD. 

Northeast (AS 18, 19): GOOD. 

Southeast (AS 20): GOOD. 

Southwest (AS 21, 22, 23, 24): GOOD. 

Prepared by Michael Richmond/Coleen Haskell, Meteorologists, Predictive Services, Northern Rockies Coordination Center. 

MARGINAL-GOOD dispersion Sunday ID and Western MT with SW flow aloft. Scattered showers. S/SW surface winds, except E/NE in N ID and NW MT. GOOD-EXCELLENT dispersion Central/Eastern MT with trough of low pressure and cold front in SE MT. Variable surface winds with SE direction in AS 9 but NW direction in AS 10.

GOOD-EXCELLENT dispersion Monday ID and Western MT with SW flow aloft. Scattered showers. SW/W surface winds. GOOD-EXCELLENT dispersion Central/Eastern MT with SW flow aloft and cold front in Eastern MT. Variable surface winds with NE/SE direction in AS 9 but NW direction in AS 10.

Monday 06 April Dispersion Forecast

MONTANA:

Northwest (AS 1, 2): EXCELLENT. 

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

Southwest (AS 7, 8A, 8B): EXCELLENT. 

Central/Eastern (AS 9, 10): GOOD in AS 9, EXCELLENT in AS 10. 

IDAHO:

North (AS 11): GOOD. 

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

West Central (AS 14, 15, 21A): GOOD. 

East Central (AS 16, 17): EXCELLENT. 

Northeast (AS 18, 19): EXCELLENT. 

Southeast (AS 20): EXCELLENT. 

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

Prepared by Michael Richmond/Coleen Haskell, Meteorologists, Predictive Services, Northern Rockies Coordination Center. 

GOOD-EXCELLENT dispersion Monday ID and Western MT with SW flow aloft. Scattered showers. SW/W surface winds. GOOD-EXCELLENT dispersion Central/Eastern MT with SW flow aloft and cold front in Eastern MT. Variable surface winds with NE/SE direction in AS 9 but NW direction in AS 10.

Tuesday 07 April Dispersion Forecast

MONTANA:

Northwest (AS 1, 2): GOOD. 

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

Southwest (AS 7, 8A, 8B): GOOD. 

Central/Eastern (AS 9, 10): EXCELLENT. 

IDAHO:

North (AS 11): GOOD. 

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

West Central (AS 14, 15, 21A): GOOD. 

East Central (AS 16, 17): GOOD. 

Northeast (AS 18, 19): GOOD. 

Southeast (AS 20): EXCELLENT. 

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

Prepared by Michael Richmond/Coleen Haskell, Meteorologists, Predictive Services, Northern Rockies Coordination Center.