Weather Alert in Montana
Winter Storm Watch issued February 15 at 11:59AM MST until February 18 at 11:00AM MST by NWS Glasgow MT
AREAS AFFECTED: Daniels; Sheridan; Western Roosevelt; Eastern Roosevelt
DESCRIPTION: * WHAT...Heavy snow possible. Total snow accumulations between 2 and 4 inches possible. Winds could gust as high as 50 mph. * WHERE...Daniels, Sheridan, and Roosevelt Counties. * WHEN...From Tuesday afternoon through Wednesday morning. * IMPACTS...Whiteout conditions are possible and may make travel treacherous and potentially life-threatening. Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Gusty winds could bring down tree branches.
INSTRUCTION: Monitor the latest forecasts for updates on this situation. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.
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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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