Weather Alert in Illinois
Flood Warning issued May 17 at 9:16PM CDT until May 20 at 7:00PM CDT by NWS St Louis MO
AREAS AFFECTED: Madison, IL; St. Charles, MO
DESCRIPTION: ...The National Weather Service in St Louis MO has issued a Flood Warning 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 forecast. * WHERE...Mississippi River at Mel Price LD. * WHEN...From Saturday afternoon to Monday evening. * IMPACTS...At 21.0 feet, Flood Stage. Minor flooding begins to occur at this level. * ADDITIONAL DETAILS... - At 9:00 PM CDT Friday the stage was 20.7 feet. - Forecast...The river is expected to rise to a crest of 21.0 feet early tomorrow afternoon. It will then fall below flood stage early Sunday afternoon. - Flood stage is 21.0 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 are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
