Weather Alert in Minnesota
Flood Warning issued August 22 at 9:51AM CDT by NWS Twin Cities/Chanhassen MN
AREAS AFFECTED: Chippewa, MN; Lac qui Parle, MN; Yellow Medicine, MN
DESCRIPTION: ...The National Weather Service in the Twin Cities has issued a Flood Warning for the following rivers in Minnesota... Minnesota River at Henderson MN19 affecting Sibley, Le Sueur and Scott Counties. Minnesota River near Jordan affecting Sibley, Scott and Carver Counties. ...Forecast flooding changed from Minor to Moderate severity for the following rivers in Minnesota... Minnesota River at Montevideo affecting Chippewa, Yellow Medicine and Lac qui Parle Counties. .As water from storms over the past few weeks continue to move through the Minnesota River more points will rise above flood stage. Based on current forecasts additional warnings downriver are not anticipated. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Minnesota River at Montevideo. * WHEN...Until further notice. * IMPACTS...At 17.0 feet, Storm sewers may need to be plugged to prevent water from backing up into streets. * ADDITIONAL DETAILS... - At 900 AM CDT Friday, the stage was 16.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 900 AM CDT Friday was 16.0 feet. - Forecast...The river is expected to maintain a crest of 16.0 feet this afternoon. - Flood stage is 14.0 feet. - Flood History...This crest compares to a previous crest of 16.0 feet on 03/25/1994.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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.
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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.
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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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