Weather Alert in North Carolina
Special Weather Statement issued February 6 at 3:01PM EST by NWS Greenville-Spartanburg SC
AREAS AFFECTED: Swain; Haywood; Graham
DESCRIPTION: Snow showers will develop across the high elevations of the Smokies this evening and then will continue through the early morning hours on Saturday, and finally tapering off by mid- morning. Elevations above 3500 feet right near the Tennessee border could get as much as 4-8 inches of snow by the time it ends, which would result in dangerous travel conditions on US Highway 441 across Newfound Gap. More populated areas of Graham, Swain, and Haywood counties may only get a dusting of snow, with maybe up to an inch around Balsam Gap and Soco Gap.
INSTRUCTION: N/A
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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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