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 are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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