Weather Alert in Alaska
Blizzard Warning issued February 10 at 11:20AM AKST until February 12 at 6:00AM AKST by NWS Fairbanks AK
AREAS AFFECTED: Shishmaref; Bering Strait Coast
DESCRIPTION: * WHAT...Blizzard conditions expected. Total snow accumulations between 1 and 3 inches. Winds gusting as high as 50 mph. * WHERE...Bering Strait Coast and Diomede. * WHEN...Until 6 AM AKST Thursday. * IMPACTS...Travel may be very difficult. Areas of blowing and falling snow could significantly reduce visibility to 1/4 mile or less at times. * ADDITIONAL DETAILS...Northeasterly winds strengthen Tuesday morning ahead of snow building in overnight Tuesday. Winds shift northerly and strengthen Tuesday night into Wednesday before weakening Wednesday evening. Visibility will fall significantly once falling snow reaches the area overnight Tuesday.
INSTRUCTION: Travel should be restricted to emergencies only.
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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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