Weather Alert in Alaska
Special Weather Statement issued August 23 at 11:17PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Kuskokwim Delta Coast and Nunivak Island
DESCRIPTION: A deepening low pressure system will move northeastward through the Bering Sea to between the Pribilof Islands and Saint Matthew Island through Monday morning and into the vicinity of Norton Sound by Monday afternoon/evening. Strong gusty southerly winds of 40 to 50 mph are likely along the northern Kuskokwim Delta Coast including the communities of Kongiganak, Kwigillingok, and Kipnuk. Peak winds will occur between mid-morning Monday and early Monday evening before slowly diminishing Monday night into Tuesday morning. High surf will accompany the strong winds with wave heights between 4 to 8 feet in the coastal waters along the Kuskokwim Delta Coast. Higher wave heights of 9 to 12 feet are likely at the southern end of Etolin Strait. Peak wave heights occur mid- Monday morning through Monday night before slowly subsiding through Tuesday morning. In addition, periods of heavy rain are also likely Sunday night through Tuesday with 2 to 3 inches of precipitation possible through the duration.
INSTRUCTION: N/A
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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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