Weather Alert in California
Severe Thunderstorm Warning issued August 25 at 2:47PM PDT until August 25 at 3:45PM PDT by NWS San Diego CA
AREAS AFFECTED: San Diego, CA
DESCRIPTION: SVRSGX The National Weather Service in San Diego has issued a * Severe Thunderstorm Warning for... East central San Diego County in southwestern California... * Until 345 PM PDT. * At 246 PM PDT, a severe thunderstorm was located near Ocotillo Wells, or 10 miles southeast of Hwy 78 Between Borrego Springs Rd And Ocotillo Wells, moving northwest at 15 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Hwy 78 Between Borrego Springs Rd And Ocotillo Wells, Borrego Springs, Hwy 78 Between S2 And Borrego Springs Rd, Ocotillo Wells, Fish Creek Wash, and Ocotillo Wells Vehicular Rec Area.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
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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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