Weather Alert in North Carolina
Flood Watch issued August 11 at 7:15PM EDT until August 12 at 12:00AM EDT by NWS Wilmington NC
AREAS AFFECTED: Columbus; Inland New Hanover; Coastal New Hanover; Inland Brunswick; Coastal Brunswick; Coastal Horry; Central Horry; Northern Horry
DESCRIPTION: * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southeast North Carolina, including the following areas, Coastal Brunswick, Coastal New Hanover, Columbus, Inland Brunswick and Inland New Hanover and northeast South Carolina, including the following areas, Central Horry, Coastal Horry and Northern Horry. * WHEN...Until midnight EDT tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Additional rainfall this evening will fall on areas that have received a surplus of rainfall during the past week. This new rainfall will fall on saturated grounds resulting in a greater potential to produce flash flooding. - weather.gov/safety/flood
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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