Weather Alert in California
Flood Advisory issued February 16 at 11:42AM PST until February 16 at 4:00PM PST by NWS Sacramento CA
AREAS AFFECTED: Amador, CA; Calaveras, CA; El Dorado, CA; Placer, CA; Sacramento, CA; San Joaquin, CA; Stanislaus, CA; Yolo, CA
DESCRIPTION: * WHAT...Urban and small stream flooding caused by excessive rainfall continues. * WHERE...Portions of Placer, Amador, Calaveras, El Dorado, Sacramento, San Joaquin, Stanislaus and Yolo Counties. * WHEN...Until 400 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 1140 AM PST, Doppler radar indicates moderate to heavy rain in the advisory area. This will continue to cause urban and small stream flooding. Between 1 and 2.5 inches of rain have fallen over the past 12 hours. - Some locations that will experience flooding include... Sacramento, Stockton, Elk Grove, Roseville, Citrus Heights, Folsom, Rocklin, Galt, Fair Oaks, Carmichael, El Dorado Hills, Cameron Park, Rancho Cordova, Lodi, West Sacramento, Lathrop, Ione, Loomis, Rancho Murieta and Rancho Seco Park. - US Highway 50 - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
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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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