Weather Alert in California
Heat Advisory issued May 30 at 8:48AM PDT until May 30 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
AREAS AFFECTED: Cuyama Valley; Santa Clarita Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Central Ventura County Valleys; Western San Fernando Valley; Eastern San Fernando Valley
DESCRIPTION: * WHAT...High temperatures from 92 to 102 expected. * WHERE...Central Ventura County Valleys, Cuyama Valley, Eastern San Fernando Valley, San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, Santa Clarita Valley, Southern Salinas Valley, and Western San Fernando Valley. * WHEN...Until 8 PM PDT this evening. * IMPACTS...There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors (including hikers).
INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
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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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