Weather Alert in Illinois
Flood Warning issued July 28 at 9:15PM CDT until July 30 at 5:00PM CDT by NWS St Louis MO
AREAS AFFECTED: Pike, IL; Marion, MO
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Hannibal. ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Winfield. Mississippi River at Clarksville. Mississippi River at Louisiana. Middle Fabius River near Ewing. ...The Flood Warning is cancelled for the following rivers in Missouri... North Fabius River near Ewing. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Hannibal. * WHEN...Until Wednesday afternoon. * IMPACTS...At 18.0 feet, The northern end of Southside Recreation #2 Park along Bear Creek begins flooding at this height. Gate wells are shut down to prevent the sewers from backing up. Also at this level pumps are set to standby. * ADDITIONAL DETAILS... - At 8:15 PM CDT Monday the stage was 17.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:15 PM CDT Monday was 17.7 feet. - Forecast...The river is expected to fall below flood stage late tomorrow morning and continue falling to 15.0 feet Monday, August 04. - Flood stage is 17.0 feet.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
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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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