Weather Alert in Illinois
Flash Flood Warning issued April 29 at 1:57PM CDT until April 29 at 5:00PM CDT by NWS St Louis MO
AREAS AFFECTED: Clinton, IL; Marion, IL
DESCRIPTION: FFWLSX The National Weather Service in St Louis has issued a * Flash Flood Warning for... Central Clinton County in south central Illinois... Marion County in south central Illinois... * Until 500 PM CDT. * At 157 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 1 inch of rain has fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Centralia, Salem, Carlyle, Sandoval, Germantown, Wamac, Central City, Odin, Beckemeyer, Kinmundy, Irvington, Patoka, Farina, Omega, Fairman, Shattuc, Boulder, Stephen Forbes Station, Helm and New Memphis. This includes the following State Parks... Carlyle Lake Recreational Area. This includes the following highways... Interstate 64 in Illinois near exit 34. Interstate 57 in Illinois between exits 109 and 127.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
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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
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