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Montana, Butte/Blackfoot Region

Air Quality Alert

Statement as of 9:00 AM MDT on August 17, 2017

Expires 11:00 AM EDT on August 18, 2017


... Air quality alert in effect until 900am MDT Friday...

The Montana department of environmental quality has issued an air
quality alert for Deer Lodge, Granite, Jefferson, Lewis And Clark,
Mineral, Missoula, Powell, Ravalli, and Silver Bow counties in effect
until further notice due to increased fire activity in west-central
Montana, most notably on the Lolo Peak fire. Fire activity is
expected to remain high for the next several days, resulting in
persistent air quality impacts. Impacts are most significant in the
Seeley Lake area. Smoke from the Rice Ridge fire is causing hazardous
air quality impacts between midnight and noon. The Missoula city-
County health department recommends residents spend as little night
time as possible in Seeley Lake due to the dangerous overnight
pollution levels. This alert will be updated again at 900am
8/18/2017.

An air quality alert means that particulates have been trending
upwards and that an exceedence of the 24 hour National ambient air
quality Standard (naaqs) has occurred or may occur in the near
future.

As of 900am, particulate levels in Seeley Lake are hazardous

As of 900am, particulate levels in Superior are unhealthy

As of 900am, particulate levels in Butte, Drummond, Lolo, Helena, and
Philipsburg are unhealthy for sensitive groups

As of 900am, particulate levels in Florence, Frenchtown, Hamilton,
Missoula, and Rock Creek are moderate

When air quality is hazardous... state and local health officials
recommend that everyone should avoid any outdoor exertion; people
with respiratory or heart disease, the elderly, and children should
remain indoors.

When air quality is unhealthy... state and local health officials
recommend that people with respiratory or heart disease, the elderly,
and children should avoid prolonged exertion; everyone else should
limit prolonged exertion.

When air quality is unhealthy for sensitive groups... state and local
health officials recommend that people with respiratory or heart
disease, the elderly and children should limit prolonged exertion.

When air quality is moderate... state and local health officials
recommend that unusually sensitive people should consider reducing
prolonged or heavy exertion.

For more information visit the Montana department of environmental
quality at www.Todaysair.Mt.Gov




Fire Weather Warning

Statement as of 4:22 AM MDT on August 18, 2017

Expires 8:00 AM EDT on August 19, 2017


... Red flag warning remains in effect from noon today to 6 am MDT
Saturday...

* affected area: fire zone 105 (flathead/Glacier park). Fire
zone 106 (west lolo). Fire zone 107 (salish and Kootenai
reservation). Fire zone 108 (east lolo). Fire zone 109
(bitterroot). Fire zone 110 (deerlodge/west beaverhead).

* Impacts/timing: a dry cold front will create dry and breezy
conditions beginning on the ridge tops early this afternoon,
then into the lower elevations in the late afternoon and
evening. Wind and dry conditions will likely occur on the
midslopes and ridges well into the overnight hours tonight.

* Winds: west winds 15 to 20 mph with gusts to 30 mph through
exposed areas. Peak winds are expected between 6 to 9 PM.

* Minimum humidities: 8 to 18 percent.





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