Weather Alert in Alaska
Winter Weather Advisory issued March 20 at 4:38AM AKDT until March 20 at 5:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Kuskokwim Delta Coast and Nunivak Island; Western Capes
DESCRIPTION: * WHAT...Blowing snow. Winds gusting as high as 35 mph. Visibility reduced to one-half mile or less at times. * WHERE...Kuskokwim Delta Coast and Nunivak Island and Western Capes. * WHEN...Until 5 PM AKDT this afternoon. * IMPACTS...Visibilities reduced to one half mile or less due to blowing snow. * ADDITIONAL DETAILS...The worst conditions are expected along the coast near Platinum and between Kipnuk and Toksook Bay. Areas of blowing snow could persist along the coast through this weekend as northerly winds slowly decrease.
INSTRUCTION: Use caution while traveling, especially in open areas.
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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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