Weather Alert in Alaska
Special Weather Statement issued September 1 at 7:59AM 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 this morning's high tide cycle, but expect rises of about 2 to 4 feet above the normal high tide line on Tuesday. The highest water levels will be around 3 to 4 feet in Shaktoolik, Koyuk and Golovin midday Tuesday with around 2 to 3 feet elsewhere.
INSTRUCTION: N/A
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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