Weather Alert in Texas
Flood Advisory issued June 11 at 11:08PM CDT until June 12 at 3:00AM CDT by NWS Austin/San Antonio TX
AREAS AFFECTED: Bandera, TX; Bexar, TX; Medina, TX
DESCRIPTION: * WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of south central Texas, including the following counties, Bandera, Bexar and Medina. * WHEN...Until 300 AM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Dangerous flows over low-water crossings. * ADDITIONAL DETAILS... - At 1108 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... San Antonio, Hondo, Castroville, Leon Valley, Helotes, Shavano Park, Cross Mountain, Cliff, Rio Medina, Mico, Government Canyon State Natural Area, Sea World, Bader, Lakehills, Dunlay, Quihi, New Fountain, Lackland AFB, Timberwood Park and Grey Forest. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Stay away or be swept away. River banks and culverts can become unstable and unsafe. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route.
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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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