Weather Alert in California
Flood Advisory issued February 24 at 5:39AM PST until February 24 at 10:00AM PST by NWS Eureka CA
AREAS AFFECTED: Humboldt, CA; Mendocino, CA; Trinity, CA
DESCRIPTION: * WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...Southeastern Humboldt County in northwestern California... Northeastern Mendocino County in northwestern California... Southwestern Trinity County in northwestern California... * WHEN...Until 1000 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Ponding of water in urban or other areas is occurring or is imminent. There will be an increased risk of rock and land slides along roadways. * ADDITIONAL DETAILS... - At 539 AM PST, Doppler radar and automated rain gauges indicated heavy rain. This is causing urban and small stream flooding. Overflowing poor drainage areas have already caused minor flooding in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Willits, Garberville, Richardson Grove State Park, Covelo, Laytonville, Hayfork, Grizzly Creek Redwoods State Park, Alderpoint, Ruth, Forest Glen, Richardson Grove, Redway, Dinsmore, Leggett, Peanut, Myers Flat, Bridgeville and Hyampom. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. 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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