Weather Alert in North Carolina
Flood Advisory issued September 2 at 9:45PM EDT until September 2 at 11:00PM EDT by NWS Greenville-Spartanburg SC
AREAS AFFECTED: Graham, NC
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of western North Carolina, including the following county, Graham. * WHEN...Until 1100 PM EDT. * IMPACTS...River or stream flows are elevated. * ADDITIONAL DETAILS... - At 939 PM EDT, Doppler radar indicated as much as 2.5 inches of rain had fallen in the headwaters of Long Creek, just west of Joanna Bald. Streams will remain high in the Long Creek drainage through late evening, and continue to be wary of the possibility of water over roads and/or flooding of low-lying areas, perhaps as far downstream as Snowbird Rd. This advisory is expected to expire on schedule. - Some locations that will experience flooding include... Robbinsville. - http://www.weather.gov/safety/flood
INSTRUCTION: Be especially cautious at night when it is harder to recognize the dangers of flooding.
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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