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MTC001-007-013-023-029-031-035-039-043-047-049-053-057-
059-061-063-067-073-077-081-089-093-099-192145-

Air Quality Alert
Relayed by National Weather Service Great Falls MT
345 PM MDT Fri Sep 18 2020

...AIR QUALITY ALERT IN EFFECT...

The Montana Department of Environmental Quality has issued an air
quality alert for Beaverhead, Broadwater, Cascade, Deer Lodge,
Flathead, Gallatin, Glacier, Granite, Jefferson, Lake, Lewis and
Clark, Lincoln, Madison, Meagher, Mineral, Missoula, Park, Pondera,
Powell, Ravalli, Sanders, Silver Bow, and Teton counties in effect
until 9/19/2020 9 AM due to heavy wildfire smoke and elevated
particulate concentrations. This alert will be updated again at
9/19/2020 9 AM.

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 4 PM, Particulate levels in Columbia Falls, Frenchtown,
Hamilton, Libby, Missoula, Seeley Lake, and Thompson Falls are
Unhealthy.

As of 4 PM, Particulate levels in Billings, Bozeman, Butte, Cut
Bank, Dillon, Great Falls, Helena, and Lewistown are Unhealthy for
Sensitive Groups.

As of 4 PM, Particulate levels in Birney, Broadus, Malta, Sidney,
West Yellowstone are Moderate.

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 http://todaysair.mt.gov.


Hazard Report Provided By forecast.weather.gov

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