Weather Alert in California
Special Weather Statement issued February 16 at 12:24PM PST by NWS Los Angeles/Oxnard CA
AREAS AFFECTED: Cuyama Valley; Santa Lucia Mountains; San Luis Obispo County Mountains; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains
DESCRIPTION: At 1223 PM PST, Doppler radar was tracking strong thunderstorms along a line extending from 21 miles east of Santa Maria to 12 miles north of Santa Rosa Island. Movement was northeast at 15 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Santa Barbara... Montecito... Isla Vista... Summerland... Goleta... Figueroa Mountain... Highway 154 over San Marcos Pass... Hope Ranch... Highway 166 between Twitchell Dam and the Cuyama Valley... Mission Canyon... Lake Cachuma... and Santa Barbara Airport.
INSTRUCTION: If outdoors, consider seeking shelter inside a building.
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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
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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