Weather Alert in California
Flood Advisory issued February 17 at 8:49PM PST until February 18 at 6:00AM PST by NWS Los Angeles/Oxnard CA
AREAS AFFECTED: Los Angeles, CA; Ventura, CA
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of southwest California, including much of the following counties, Los Angeles and Ventura. * WHEN...Until 600 AM PST Wednesday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rock and mud slides possible. Minor debris flows possible. * ADDITIONAL DETAILS... - At 848 PM PST, Doppler radar indicated heavy showers and isolated thunderstorms developing across the region. Activity will continue through the pre-dawn hours of Wednesday. Minor flooding is ongoing or expected to begin shortly in the advisory area, and continue through the overnight hours. Rock and mud slides possible. Minor debris flows possible. - Some locations that will experience flooding include... Long Beach, Oxnard, Thousand Oaks, Simi Valley, Ventura, Camarillo, Fillmore, Malibu, Ojai, Chatsworth, Woodland Hills, Northridge, Encino, Van Nuys, Agoura Hills, Santa Clarita, North Hollywood, Santa Monica and Beverly Hills. And burn scars across the Flood Advisory area. - 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 the potential for rock slides and mud slides in areas of steep terrain.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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