Weather Alert in Virginia
Coastal Flood Watch issued August 21 at 9:50AM EDT until August 23 at 6:00PM EDT by NWS Wakefield VA
AREAS AFFECTED: Westmoreland; Northumberland
DESCRIPTION: * WHAT...For the Coastal Flood Advisory, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Watch, one to three feet of inundation above ground level possible in low-lying areas near shorelines and tidal waterways. * WHERE...Westmoreland and Northumberland Counties. * WHEN...For the Coastal Flood Advisory, until 10 AM EDT Friday. For the Coastal Flood Watch, from Friday morning through Saturday afternoon. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur.
INSTRUCTION: If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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