Weather Alert in California
Winter Weather Advisory issued February 17 at 1:43PM PST until February 19 at 10:00PM PST by NWS Reno NV
AREAS AFFECTED: Greater Lake Tahoe Area; Greater Lake Tahoe Area
DESCRIPTION: * WHAT...Heavy snow. Additional snow accumulations between 1 to 3 feet in the Tahoe Basin, locally up to 4 feet along the highest peaks. Snow totals will be highest on the west shore, and much of Alpine County. Winds gusting up to 50 mph in valleys, with Sierra ridge gusts over 100 mph. For Thursday's storm, up to 6 inches on the east shore, 6 to 10 inches on the west shore, and up to 18 inches at the crest. * WHERE...Greater Lake Tahoe Area. * WHEN...For the Winter Storm Warning, until 7 AM PST Wednesday. For the Winter Weather Advisory, from 4 AM to 10 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible with periods of white out conditions. Very strong winds could cause damage to trees and power lines. * ADDITIONAL DETAILS...The highest snowfall rates will continue through early Wednesday morning. There is also the threat of lightning throughout the greater Lake Tahoe area through 6pm today. Blowing snow may produce limited visibility and near whiteout conditions at times.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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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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