Weather Alert in Alaska
Cold Weather Advisory issued February 28 at 2:43PM AKST until March 1 at 11:00AM AKST by NWS Anchorage AK
AREAS AFFECTED: SW Kenai Peninsula; Southern Kenai Mtns; West Prince William Sound & Whittier; Valdez
DESCRIPTION: * WHAT...Very cold wind chills of 10 below to 25 below zero expected. * WHERE...Southwest Kenai Peninsula, Seward and vicinity, Whittier, and Valdez. * WHEN...From 8 PM this evening to 11 AM AKST Sunday. * IMPACTS...The very cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 20 minutes. Frostbite and hypothermia are likely if exposed to these temperatures. * ADDITIONAL DETAILS...Northerly winds (except westerly winds in Whittier) will strengthen this evening into the overnight hours, leading to rapidly falling wind chills. Winds will slowly diminish on Sunday.
INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
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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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