Weather Alert in North Carolina
Coastal Flood Advisory issued August 21 at 11:10PM EDT until August 23 at 12:00AM EDT by NWS Newport/Morehead City NC
AREAS AFFECTED: Ocracoke Island
DESCRIPTION: * WHAT...For the Coastal Flood Advisory, one to two feet of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, dangerous rip currents. * WHERE...Ocracoke Island. * WHEN...For the Coastal Flood Advisory, until midnight EDT Friday night. For the Beach Hazards Statement, from 7 AM EDT Friday through Friday evening. * IMPACTS...Up to 1 to 2 feet of inundation above ground level is possible in low-lying areas soundside near shorelines and tidal waterways resulting in a low threat of property damage. In areas of compromised dune structures some additional ocean overwash is possible around high tide Friday morning and Friday evening, which could lead to locally higher inundation. Some roads and low lying property including parking lots, parks, lawns, and homes adjacent to the waterfront will experience shallow flooding. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...The most likely time for strong rip currents to occur is a couple hours either side of low tide, which will occur around 1:30 pm Friday.
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. Life-threatening rip currents. If caught in a rip current, remain calm. Swim in a direction following the shoreline. If tired, float or tread water until out of the rip current. If unable to escape, face the shore and call or wave for help.
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Weather Topic: What are Wall Clouds?
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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.
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Weather Topic: What are Altostratus Clouds?
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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.
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