Weather Alert in California
Special Weather Statement Wind Advisory
Severe Thunderstorm Warning issued February 18 at 12:18AM PST until February 18 at 1:45AM PST by NWS Los Angeles/Oxnard CA
AREAS AFFECTED: Los Angeles, CA
DESCRIPTION: SVRLOX The National Weather Service in OXNARD has issued a * Severe Thunderstorm Warning for... Central and Southern Los Angeles County in southwestern California... * Until 145 AM PST. * At 1217 AM PST, severe thunderstorms were located along a line extending from Pacoima to 26 miles southeast of Anacapa Island, moving east at 40 mph. HAZARD...60 to 70 mph wind gusts. Brief weak tornado possible. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Long Beach... Thousand Oaks... Encino... Inglewood... Manhattan Beach... Agoura Hills... Venice... Rancho Palos Verdes... Hollywood... Van Nuys... Alhambra... Mount Wilson... Culver City... Torrance... Universal City... Whittier... Burbank... Beverly Hills... Northridge... and Griffith Park.
INSTRUCTION: Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.
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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
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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