Weather Alert in California
High Surf Advisory issued February 5 at 10:32AM PST until February 8 at 6:00AM PST by NWS San Diego CA
AREAS AFFECTED: San Diego County Coastal Areas; Orange County Coastal
DESCRIPTION: * WHAT...Large breaking waves of 5 to 8 feet, with sets to 10 feet at west-facing beaches. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...From 10 AM Friday to 6 AM PST Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. High rip current risk. Minor tidal overflow into parking lots also possible. * ADDITIONAL DETAILS...Rip currents are powerful channels of water flowing quickly away from shore...which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins...jetties and piers. Heed the advice of lifeguards...beach patrol flags and signs. If you become caught in a rip current...yell for help. Remain calm...do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current...SWIM PARALLEL TO SHORE and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly..
INSTRUCTION: Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
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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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