Weather Alert in Alaska
Special Weather Statement issued September 1 at 7:42AM AKDT by NWS Fairbanks AK
AREAS AFFECTED: Southern Seward Peninsula Coast; Eastern Norton Sound and Nulato Hills
DESCRIPTION: A low in the Bering Sea will provide south/southwest winds through Wednesday. Water levels will be higher than normal for tomorrow morning's high tide cycle, but expect rises of about 2 to 4 feet above the normal high tide line by Wednesday. The highest water levels will be around 3 to 4 feet in Shaktoolik, Koyuk and Golovin midday Wednesday with around 2 to 3 feet elsewhere.
INSTRUCTION: N/A
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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