Weather Alert in California
Special Weather Statement issued September 2 at 8:54AM PDT by NWS San Diego CA
AREAS AFFECTED: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; San Gorgonio Pass Near Banning
DESCRIPTION: At 854 AM PDT, Doppler radar was tracking a strong thunderstorm over Redlands, moving northwest at 10 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Riverside, San Bernardino, Moreno Valley, Redlands, Yucaipa, Perris, Highland, Colton, San Jacinto, Beaumont, Banning, Loma Linda, Mentone, Hiwy 330 Between San Bernardino And Running Springs, March Afb, Hwy 38 Between Yucaipa And Onyx Summit, Grand Terrace, Calimesa, Highgrove, and Lakeview.
INSTRUCTION: If outdoors, consider seeking shelter inside a building. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.
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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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