Weather Alert in Montana
Winter Weather Advisory issued February 8 at 5:24PM MST until February 9 at 8:00AM MST by NWS Missoula MT
AREAS AFFECTED: Butte/Blackfoot Region
DESCRIPTION: * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations up to two inches. * WHERE...Georgetown Lake, Homestake Pass, Highway 12 Garrison to Elliston, MacDonald Pass, and Butte. * WHEN...From midnight tonight to 8 AM MST Monday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Slick traveling conditions. Use extra caution while driving. The hazardous conditions could impact the Monday morning commute, especially over higher passes. * ADDITIONAL DETAILS...Moderate snow intensities with a cold front passage will occur after midnight. Interstate 90 from Warm Springs to Homestake Pass and points eastwards could become snow-covered. Visibility reduced down to one-half mile at times with the snow.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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North America Water Vapor (Moisture)
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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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