Weather Alert in Maine
High Surf Advisory issued August 22 at 1:23AM EDT until August 23 at 2:00PM EDT by NWS Caribou ME
AREAS AFFECTED: Coastal Hancock; Coastal Washington
DESCRIPTION: * WHAT...Waves building to 7 to 10 feet, with a wave period of 13 to 17 seconds. Minor splashover is possible at high tide Friday night. * WHERE...Coastal Hancock and Coastal Washington Counties. * WHEN...For the High Surf Advisory, from 6 PM this evening to 2 PM EDT Saturday. For the Coastal Flood Statement, Friday evening at high tide. * IMPACTS...Rip currents and sneaker waves will lead to dangerous beach conditions. Some minor beach erosion is possible. Minor splashover possible during high tide Friday Evening. SHORELINE FLOOD IMPACTS...Building waves will cause minor splash-over on exposed coastal roads and shorelines. Pedestrians and motorists should use caution along shorelines. Large waves can present a danger to people on rocks above the water. Stay away from rock outcrops along the shoreline exposed to ocean waves...as waves can easily sweep people into the cold ocean water.
INSTRUCTION: A High Surf Advisory Means That High Surf Will Affect Beaches In The Advisory area...producing rip currents and localized beach erosion.
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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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