Weather Alert in Montana
Winter Weather Advisory issued March 31 at 8:34PM MDT until April 1 at 9:00AM MDT by NWS Billings MT
AREAS AFFECTED: Livingston Area; Northern Sweet Grass; Melville Foothills
DESCRIPTION: * WHAT...Snow occurring. Mixed precipitation expected, including freezing pockets of rain expected. Additional snow accumulations up to 3 inches. Total ice accumulations of a light glaze possible. * WHERE...Livingston Area, Melville Foothills, and Northern Sweet Grass. * WHEN...Until 9 AM MDT Wednesday. * IMPACTS...Travel will be difficult due to the snow and poor visibility. Roads will become icy or slushy into Wednesday morning. This includes I-90 from Big Timber to Livingston and Bozeman Pass. * ADDITIONAL DETAILS...Snowfall is expected into the late evening, before mixed precipitation is possible overnight. Light ice accumulations along I-90 eastbound could impact the Wednesday morning commute.
INSTRUCTION: Slow down and use caution while traveling. For the latest road conditions, call 5 1 1.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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