Weather Alert in Alaska
Cold Weather Advisory issued March 6 at 4:04PM AKST until March 9 at 1:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Central Alaska Peninsula; Chignik; Southern Alaska Peninsula
DESCRIPTION: * WHAT...Very cold wind chills from 10 to 25 below expected. * WHERE...Central Alaska Peninsula, Chignik, and Southern Alaska Peninsula. * WHEN...From midnight AKST tonight to 1 PM AKDT Monday. * IMPACTS...Dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia are likely if exposed to these temperatures. Wind chill values can lead to hypothermia with prolonged exposure. * ADDITIONAL DETAILS...A cold northerly flow and enhanced wind gusts will lead to a period of frigid wind chills over the weekend through Monday morning. By Monday afternoon, a slight warming trend will occur, raising wind chills closer to zero.
INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
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Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
Weather Topic: What are Cumulus Clouds?
Home - Education - Cloud Types - Cumulus Clouds
Next Topic: Drizzle
Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
Next Topic: Drizzle
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