Weather Alert in California
Winter Weather Advisory issued February 17 at 10:21AM PST until February 19 at 10:00PM PST by NWS San Diego CA
AREAS AFFECTED: San Diego County Mountains
DESCRIPTION: * WHAT...Wet snow. Additional snow accumulations 3 to 6 inches expected this evening into Wednesday for elevations below 5500 feet. Snow amounts up to 9 inches possible above 5500 feet. Strong winds are expected with peak gusts 50 to 60 mph, locally up to 75 mph Wednesday morning. An additional 1 to 3 inches of snow are possible Thursday. * WHERE...San Diego County Mountains. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Very strong winds could cause extensive tree damage. * ADDITIONAL DETAILS...Locally damaging winds are expected on the desert mountain slopes, locally into the foothills.
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.
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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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