Weather Alert in California

Wind Advisory issued April 1 at 3:25PM PDT until April 2 at 9:00AM PDT by NWS Los Angeles/Oxnard CA

AREAS AFFECTED: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains

DESCRIPTION: * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Eastern San Gabriel Mountains, Interstate 5 Corridor, Northern Ventura County Mountains, Santa Barbara County Interior Mountains, Santa Barbara County Southwestern Coast, Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western Range, Southern Ventura County Mountains, and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...Until 9 AM PDT Wednesday. * IMPACTS...Difficult driving conditions expected, especially for motor homes and big rigs. Unsecured objects will be blown around. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Light rain or mountain snow showers are possible as well, including around the Interstate 5 Tejon Pass. Winds will pick up again Wednesday afternoon and evening, and additional Wind Advisories may be needed.

INSTRUCTION: Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

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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

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

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