Weather Alert in Alabama
Flood Advisory issued May 11 at 11:10PM CDT until May 12 at 2:15AM CDT by NWS Birmingham AL
AREAS AFFECTED: Bibb, AL; Jefferson, AL; Shelby, AL
DESCRIPTION: * WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of central Alabama, including the following counties, Bibb, Jefferson and Shelby. * WHEN...Until 215 AM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. River or stream flows are elevated. * ADDITIONAL DETAILS... - At 1110 PM CDT, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 0.5 and 1 inch of rain has fallen. - Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Birmingham, Hoover, Vestavia Hills, Alabaster, Bessemer, Homewood, Pelham, Mountain Brook, Helena, Hueytown, Gardendale, Irondale, Fairfield, Chelsea, Fultondale, Sumiton, Center Point, Pleasant Grove, Tarrant and Midfield.
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.
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Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
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