Weather Alert in California
Special Weather Statement issued July 29 at 6:03PM PDT by NWS Los Angeles/Oxnard CA
AREAS AFFECTED: Catalina and Santa Barbara Islands; San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches; San Miguel and Santa Rosa Islands; Santa Cruz and Anacapa Islands
DESCRIPTION: ...TSUNAMI WATCH IS IN EFFECT FOR THE FOLLOWING LOCATIONS, ALL COASTAL AREAS OF LOS ANGELES...VENTURA...SANTA BARBARA...AND SAN LUIS OBISPO COUNTIES... * LOCAL IMPACTS... POTENTIAL TSUNAMI IMPACTS FOR THE FOLLOWING LOCATIONS, ALL COASTAL AREAS OF LOS ANGELES, VENTURA, SANTA BARBARA, AND SAN LUIS OBISPO COUNTIES... * RECOMMENDED ACTIONS... If you are located in this coastal area, stay alert for further updates, as well as instructions from your local emergency officials. * FORECAST TSUNAMI START TIMES... Port San Luis California 1235 AM PDT on Jul 30 Santa Barbara California 1250 AM PDT on Jul 30 Los Angeles California 0105 AM PDT on Jul 30 Tsunamis often arrive as a series of waves or surges which could be dangerous for many hours after the first wave arrival. The first tsunami wave or surge may not be the highest in the series. * FORECAST TSUNAMI DURATION... TSUNAMI WATCH IS IN EFFECT UNTIL FURTHER NOTICE * PRELIMINARY EARTHQUAKE INFORMATION... An earthquake occurred with a preliminary magnitude of 8.7 off the coast of Russia. This product will be updated as new information becomes available. Stay tuned to your local news source and NOAA weather radio for further information and updates.
INSTRUCTION: N/A
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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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