Weather Alert in North Carolina
High Surf Advisory issued August 20 at 7:37PM EDT until August 23 at 12:00AM EDT by NWS Newport/Morehead City NC
AREAS AFFECTED: Northern Outer Banks; Ocracoke Island; Hatteras Island
DESCRIPTION: * WHAT...For the Beach Hazards Statement, dangerous rip currents in the surf zone. For the High Surf Advisory, large breaking waves of 10 to 20+ feet in the surf zone. * WHERE...The beaches from Duck to Hatteras Island. * WHEN...For the Beach Hazards Statement, through Thursday evening. For the High Surf Advisory, until midnight EDT Friday night. * IMPACTS...Extreme beach and coastal damage is likely along the oceanside, resulting in a significant threat to life and property. Large dangerous waves will likely inundate and destroy protective dune structures. Severe flooding will likely extend inland from the waterfront causing flooding of many homes and businesses with some structural damage possible. Numerous roads will likely be impassable under several feet of water and vehicles will likely be submerged. Actions will need to be taken to protect life and property. Extremely dangerous swimming and surfing conditions expected, as well as the wave action resulting in significant beach erosion. * ADDITIONAL DETAILS...A Storm Surge Warning remains in effect for the Outer Banks. This is expected to be a prolonged duration event, with the potential for portions of NC-12 and secondary roads along the Outer Banks, in particular on Hatteras and Ocracoke Islands, to be impassable and/or inaccessible through the end of the week due to significant wave run up.
INSTRUCTION: Inexperienced swimmers should remain out of the water due to dangerous surf conditions. 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?
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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