Weather Alert in Texas
Flood Advisory issued May 1 at 6:34PM CDT until May 1 at 9:30PM CDT by NWS Shreveport LA
AREAS AFFECTED: San Augustine, TX
DESCRIPTION: * WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Texas, including the following county, central San Augustine. * WHEN...Until 930 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 633 PM CDT, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. This will cause small stream flooding. Between 1 and 3 inches of rain have fallen across Central San Augustine County. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Macune and Chinaquapin. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
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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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