Weather Alert in North Carolina
Winter Weather Advisory issued February 21 at 1:59PM EST until February 24 at 12:00AM EST by NWS Blacksburg VA
AREAS AFFECTED: Ashe; Watauga; Smyth; Grayson
DESCRIPTION: Low pressure will pass over the region tonight and Sunday with rain changing to snow across the higher elevations. Arrival of colder air Sunday along with the development of a strong winter storm along the coastal mid-atlantic will result in an extended period of snow across the mountains Sunday night through Monday. * WHAT...Snow expected. Total snow accumulations up to 4 inches. Locally higher amounts at elevations above 4000 feet. Winds gusting as high as 45 mph. * WHERE...In North Carolina, Ashe and Watauga Counties. In Virginia, Grayson and Smyth Counties. * WHEN...From midnight tonight to midnight EST Monday Night. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Temperatures are expected to fall into the teens Sunday night with wind chills in the single digits.
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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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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