Weather Alert in Alaska
Winter Storm Watch issued March 2 at 5:52AM AKST until March 4 at 3:00AM AKST by NWS Juneau AK
AREAS AFFECTED: Glacier Bay; Eastern Chichagof Island; Cape Fairweather to Lisianski Strait; Admiralty Island; City and Borough of Juneau
DESCRIPTION: ...MULTIPLE ROUNDS OF SNOWFALL EXPECTED THROUGH EARLY WEEK... Snow continues for the central inner channels from Wrangell and Kake northward though rates are starting to diminish. Prince of Wales Island mainly has rain at coastal communities, but inland areas of the island are seeing snow. Expect the precip to continue to diminish through the morning as the system moves off to the east Monday. Another system will bring more accumulating snow to the panhandle Monday night into Tuesday night. The track of this follow up feature could lead to significant swings in snow accumulations from Frederick Sound northward to the Icy Strait corridor. * WHAT...Heavy snow possible. Total snow accumulations of 6 to 11 inches possible. Winds could gust as high as 45 mph. * WHERE...Glacier Bay, Eastern Chichagof Island, Cape Fairweather to Lisianski Strait, Admiralty Island and City and Borough of Juneau. * WHEN...From late Monday night through late Tuesday night. * IMPACTS...Travel could be very difficult and is discouraged. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...An arctic boundary over the panhandle is expected to continue to linger around Frederick Sound Monday into Tuesday. An approaching system will bring a fresh influx of moisture and moderate to heavy snow to the central panhandle. A more southerly track of this feature could lead to much lower snow totals for communities north of Angoon.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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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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