Weather Alert in Montana
Air Quality Alert issued September 3 at 8:55AM MDT by NWS Great Falls MT
AREAS AFFECTED: Flathead, MT; Glacier, MT; Lake, MT; Lincoln, MT; Mineral, MT; Missoula, MT; Powell, MT; Sanders, MT
DESCRIPTION: AQAMT The Montana Department of Environmental Quality has issued an air quality alert for Flathead, Lake, Lincoln, Mineral, Missoula, Powell, Sanders, Glacier counties in effect until 9AM on 09/04/2025 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 09/03/2025, particulate levels in Great Falls are Unhealthy for Sensitive Groups. As of 8AM on 09/03/2025, particulate levels in Billings, Butte, Columbia Falls, Cut Bank, Glendive, Hamilton, Havre, Lewistown, 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 Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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