Weather Alert in Illinois
Severe Thunderstorm Warning issued April 29 at 1:34PM CDT until April 29 at 2:15PM CDT by NWS Paducah KY
AREAS AFFECTED: Jackson, IL; Perry, IL; Perry, MO
DESCRIPTION: SVRPAH The National Weather Service in Paducah has issued a * Severe Thunderstorm Warning for... Southern Perry County in south central Illinois... Jackson County in southern Illinois... Southeastern Perry County in southeastern Missouri... * Until 215 PM CDT. * At 134 PM CDT, severe thunderstorms were located along a line extending from near Willisville to 9 miles southwest of Ava to near Altenburg, moving east at 40 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Dowell, Campbell Hill, St. Johns, Ava, Vergennes, Du Quoin, Gorham, Frohna, Carbondale, Elkville, Makanda, Grand Tower, Murphysboro, Cedar Lake Area, De Soto, Altenburg, Willisville, and Pinckneyville. This includes Interstate 55 between Mile Markers 120 and 121.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building.
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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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