Weather Alert in California
Heat Advisory issued August 30 at 6:06AM PDT until August 31 at 6:00PM PDT by NWS Los Angeles/Oxnard CA
AREAS AFFECTED: San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
DESCRIPTION: * WHAT...Hot daytime conditions with high temperatures from 85 to 95 coastal plains to 95 to 105 degrees valleys and hills. * WHERE...Inland Central Coasts of San Luis Obispo and Santa Barbara Counties, Santa Lucia Mountains, Santa Ynez Mountains Western Range, Santa Ynez Valley, and Southern Salinas Valley. * WHEN...From 10 AM to 6 PM PDT Sunday. * 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.
INSTRUCTION: Limit strenuous outdoor activities (like hiking) to the early morning hours. Stay in air conditioned spaces during the heat of the day. Check up on relatives and neighbors.
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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