Weather Alert in Montana
Air Quality Alert issued September 2 at 9:03AM MDT by NWS Great Falls MT
AREAS AFFECTED: Daniels, MT; Dawson, MT; McCone, MT; Richland, MT; Roosevelt, MT; Sheridan, MT; Valley, MT
DESCRIPTION: AQAMT The Montana Department of Environmental Quality has issued an air quality alert for Daniels, Dawson, McCone, Richland, Roosevelt, Sheridan, Valley counties in effect until 9AM on 09/03/2025 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. Elevated particulate levels from wildfire smoke As of 8AM on 09/02/2025, particulate levels in Glendive are Unhealthy for Sensitive Groups. As of 8AM on 09/02/2025, particulate levels in Billings, Butte, Columbia Falls, Cut Bank, Frenchtown, Great Falls, Lewistown, Missoula, Seeley Lake, Sidney and Thompson Falls are Moderate. 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.mtdeq.us
INSTRUCTION: N/A
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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