Weather Alert in Alaska
High Wind Warning issued February 23 at 3:34PM AKST until February 26 at 9:00AM AKST by NWS Anchorage AK
AREAS AFFECTED: Thompson Pass
DESCRIPTION: * WHAT...North winds 40 to 65 mph with gusts up to 85 mph expected. Wind chills dropping to 40 below Wednesday night. * WHERE...Thompson Pass. * WHEN...From 3 AM Wednesday to 9 AM AKST Thursday. * IMPACTS...High winds may move loose debris, damage property, and cause power outages. Travel will be difficult. Blowing snow due to high winds will reduce visibilities to one half mile or less at times. The dangerously cold wind chills as low as 40 below zero could cause frostbite on exposed skin in as little as 10 minutes. * ADDITIONAL DETAILS...North to northeast winds will rapidly strengthen late Tuesday afternoon through Tuesday night, then peak Wednesday through Wednesday night. As winds first develop, freshly fallen snow will easily blow around, leading to near-blizzard conditions at times. As snow becomes scoured out, visibilities should improve. Winds will very slowly diminish Thursday through Friday.
INSTRUCTION: People are urged to secure loose objects that could be blown around or damaged by the wind. Prepare for the possibility of widespread power outages. Use caution if you must drive.
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Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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