Weather Alert in Alaska
Cold Weather Advisory issued March 18 at 2:25PM AKDT until March 20 at 1:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Western Capes
DESCRIPTION: * WHAT...Very cold wind chills as low as 40 below expected. * WHERE...Western Capes. * WHEN...From 10 AM Thursday to 1 PM AKDT Friday. * IMPACTS...The dangerously cold wind chills as low as 40 below zero could cause frostbite on exposed skin in as little as 10 minutes. Wind chill values can lead to hypothermia with prolonged exposure. * ADDITIONAL DETAILS...Temperatures overnight and in the early morning will see the lowest expected wind chills. Temperatures and wind chills expected to improve during daytime hours, but return to hazardous levels by nighttime and early morning hours. By Friday afternoon, wind chills will warm above hazardous levels. Wind gusts to 40 mph may cause blowing snow where transportable snow on the ground remains.
INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. 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 Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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
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