Weather Alert in Tennessee
Flood Advisory issued May 12 at 5:25PM EDT until May 12 at 8:30PM EDT by NWS Morristown TN
AREAS AFFECTED: Claiborne, TN; Grainger, TN; Lee, VA
DESCRIPTION: * WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...Portions of east Tennessee, including the following counties, Claiborne and Grainger and southwest Virginia, including the following county, Lee. * WHEN...Until 830 PM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 525 PM EDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 1 and 2.5 inches of rain have fallen. - Some locations that will experience flooding include... New Tazewell, Tazewell, Harrogate, Powell River Preserve, Lone Mountain, Arthur, Sandlick, Cumberland Gap and Ewing. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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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