Weather Alert in South Carolina
Flash Flood Warning issued August 22 at 5:41PM EDT until August 22 at 9:00PM EDT by NWS Charleston SC
AREAS AFFECTED: Berkeley, SC; Charleston, SC; Dorchester, SC
DESCRIPTION: FFWCHS The National Weather Service in Charleston has extended the * Flash Flood Warning for... Berkeley County in southeastern South Carolina... Charleston County in southeastern South Carolina... Dorchester County in southeastern South Carolina... * Until 900 PM EDT. * At 541 PM EDT, Emergency management officials reported flash flooding is ongoing across the warned area. Roads remain closed and are flooded across portions of Dorchester County as well as Berkeley County. Water has entered homes around Knightsville and Summerville. As much as 2 to 6 inches of rain have fallen in this area today. Up to an additional inch could fall through 9 PM. The risk for additional flash flooding continues, especially near streams and creeks. Dorchester County Emergency Management is requesting that people stay off the roads and remain at home. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Emergency management reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... North Charleston, Summerville, Goose Creek, Hanahan, Ladson, Givhans Ferry State Park, Ridgeville, Sangaree, College Park and Knightsville. This includes I-26 between mile markers 194 and 207.
INSTRUCTION: Keep children away from storm drains, culverts, creeks and streams. Water levels can rise rapidly and sweep children away. Be aware of your surroundings and do not drive on flooded roads.
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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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