Weather Alert in California

Recent Locations: San Bruno, CA   San Marcos, CA  
Current Alerts for San Marcos, CA: Flood Advisory High Surf Advisory
Wind Advisory

Flash Flood Warning issued February 16 at 10:57AM PST until February 16 at 2:00PM PST by NWS Los Angeles/Oxnard CA

AREAS AFFECTED: Los Angeles, CA

DESCRIPTION: FFWLOX The National Weather Service in Los Angeles/Oxnard has issued a * Flash Flood Warning for... Central and Southern Los Angeles County in southwestern California including the Eaton Burn Scar... * Until 200 PM PST. * At 1057 AM PST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. The expected rainfall rate is 0.5 to 1 inch in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Rock and mud slides. Minor debris flows at recent burn scars including the Eaton burn scar. * Some locations that will experience flash flooding include... Long Beach, Downtown Los Angeles, Griffith Park, Hollywood, Inglewood, Culver City, Burbank, Alhambra, North Hollywood, Pasadena, Venice, Santa Monica, Manhattan Beach, Van Nuys, Hermosa Beach, Torrance, Encino, Redondo Beach, Mount Wilson, and Eaton Burn Scar.

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, and be aware of rock slides and mud slides around high terrain. Follow direction of Emergency Management and Law Enforcement officials.

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Cirrus Clouds Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Contrails Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

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