Weather Alert in South Dakota
Flood Warning issued August 10 at 11:45PM CDT by NWS Aberdeen SD
AREAS AFFECTED: Brown, SD
DESCRIPTION: ...The Flood Warning continues for the following rivers in South Dakota... James River At Columbia affecting Brown County. .For sites with a river forecast, the forecast includes precipitation through the next 24 hours. Any future precipitation could affect the forecasts. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...James River at Columbia. * WHEN...Until further notice. * IMPACTS...At 13.0 feet, Flooding of the lower lying agricultural areas begins. At 15.0 feet, Significant amounts of agricultural lands are flooded. * ADDITIONAL DETAILS... - At 11:00 PM CDT Sunday the stage was 13.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:00 PM CDT Sunday was 13.0 feet. - Forecast...The river is expected to rise to a crest of 15.2 feet Wednesday morning. - Flood stage is 13.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov/abr. The next statement will be issued by Tuesday morning at 745 AM CDT.
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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
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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