Weather Alert in Virginia
Flood Warning issued July 15 at 1:41AM EDT until July 15 at 7:00AM EDT by NWS Wakefield VA
AREAS AFFECTED: Chesterfield, VA; Dinwiddie, VA; Prince George, VA; City of Colonial Heights, VA; City of Petersburg, VA
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Portions of central and south central Virginia, including the following counties and independent cities, in central Virginia, Chesterfield and City of Colonial Heights. In south central Virginia, City of Petersburg, Dinwiddie and Prince George. * WHEN...Until 700 AM EDT. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 141 AM EDT, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. Between 1.5 and 2.5 inches of rain have fallen. Flooding is already occurring with streams out of their banks and water over several roadways across Dinwiddie and Prince George Counties into the cities of Petersburg and Colonial Heights. - Additional rainfall amounts up to 1.5 inches are possible in the warned area. - Some locations that will experience flooding include... Petersburg, Colonial Heights, Virginia State University, Fort Gregg-Adams, Ettrick, Matoaca, Petersburg National Battlefield, Addison and Petersburg Airport. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Do not stay in areas subject to flooding when water begins rising.
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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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