Weather Alert in Alaska
Special Weather Statement issued May 12 at 6:28AM AKDT by NWS Fairbanks AK
AREAS AFFECTED: Northern Denali Borough; Southern Denali Borough; Eastern Alaska Range North of Trims Camp; Eastern Alaska Range South of Trims Camp
DESCRIPTION: A frontal system from the Bering Sea will bring much cooler air to the area Monday along with precipitation, which is expected to begin as rain as early as Monday morning. Snow levels will fall to around 1500 feet through the day on Monday with snow expected down to highway level Monday night into Tuesday morning. There is considerable uncertainty as to how much snow will fall, but up to 6 inches remains possible. The mostly likely spots to see this would be from Trims Camp south along the Richardson Highway and between Denali Park and Cantwell along the Parks Highway. Precipitation will taper off Tuesday night with significant melting expected Wednesday.
INSTRUCTION: N/A
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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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