Weather Alert in North Carolina
Flash Flood Warning issued August 20 at 4:02PM EDT until August 20 at 10:00PM EDT by NWS Blacksburg VA
AREAS AFFECTED: Alleghany, NC; Ashe, NC; Watauga, NC; Wilkes, NC; Grayson, VA
DESCRIPTION: FFWRNK The National Weather Service in Blacksburg has issued a * Flash Flood Warning for... Alleghany NC County in northwestern North Carolina... Ashe County in northwestern North Carolina... Southeastern Watauga County in northwestern North Carolina... Central Wilkes County in northwestern North Carolina... Southern Grayson County in southwestern Virginia... * Until 1000 PM EDT. * At 402 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Boone... Sparta... Jefferson... West Jefferson... Blowing Rock... Independence... Lansing... This includes the following streams and drainages... Brush Creek, Beaverdam Creek, Bridle Creek, Bee Tree Branch, Bear Branch, Big Sandy Creek, Beaver Creek, Big Pine Creek, Big Horse Creek and Basin Creek.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. When it is safe to do so, please send your reports of flooding, including mudslides or flooded roads, to the National Weather Service by calling toll free at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be shared on the National Weather Service Blacksburg Facebook page and on X.
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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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