Weather Alert in Alaska
Winter Weather Advisory issued March 6 at 3:06AM AKST until March 6 at 3:00PM AKST by NWS Anchorage AK
AREAS AFFECTED: Inland Bristol Bay; Lake Iliamna / Nila Vena / Nanvarpak
DESCRIPTION: * WHAT...Snow and blowing snow expected. Total snow accumulations up to 4 to 8 inches. Winds gusting as high as 40 mph. Visibility reduced to one-half mile or less at times. * WHERE...Inland Bristol Bay including New Stuyahok and Lake Iliamna communities. * WHEN...Until 3 PM AKST this afternoon. * IMPACTS...Visibilities reduced to one half mile or less due to blowing snow. Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...A strong low pressure system will approach the Bristol Bay Thursday bringing snowfall and gusty winds. Communities such New Stuyahok and Levelock will experience the strongest winds under this pattern, reducing visibility to one-half mile at times. Winds will be strongest for communities close to the coast. Note that cold air will be ushered into the area behind this system.
INSTRUCTION: Slow down and use caution while traveling.
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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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