Weather Alert in Illinois
Flood Warning issued May 18 at 9:56PM CDT until May 22 at 1:00PM CDT by NWS St Louis MO
AREAS AFFECTED: Jackson, IL; Randolph, IL; Perry, MO; Ste. Genevieve, MO
DESCRIPTION: ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Winfield. Mississippi River at Clarksville. ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Hannibal. Mississippi River at Louisiana. Mississippi River at Chester. ...The Flood Warning is cancelled for the following rivers in Illinois...Missouri... Mississippi River at Mel Price LD. 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 Chester. * WHEN...Until early Wednesday afternoon. * IMPACTS...At 28.0 feet, Unleveed islands near Chester and the prison farm floods. * ADDITIONAL DETAILS... - At 9:30 PM CDT Saturday the stage was 28.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Saturday was 28.5 feet. - Forecast...The river is expected to rise to a crest of 28.5 feet just after midnight tonight. It will then fall below flood stage Tuesday morning. - Flood stage is 27.0 feet.
INSTRUCTION: Motorists should not attempt to drive around barricades or drive cars through flooded areas. 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 is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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
