Weather Alert in Alaska
Cold Weather Advisory issued February 25 at 9:07PM AKST until February 26 at 12:00PM AKST by NWS Anchorage AK
AREAS AFFECTED: Anchorage; Anchorage Hillside / Eagle River
DESCRIPTION: * WHAT...Very cold wind chills as low as 20 to 30 below. * WHERE...Anchorage / Eagle River (all elevations). * WHEN...Until noon AKST Thursday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 15 minutes. * ADDITIONAL DETAILS...The combination of gusty winds and cold temperatures will keep wind chills between 10 and 20 below zero through this evening. Temperatures are then expected to fall below zero overnight with wind chill values falling to between 20 and 30 below zero. Winds will slowly diminish Thursday morning as temperatures climb back above zero.
INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
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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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