Weather Alert in Illinois
Severe Thunderstorm Warning issued April 29 at 1:37PM CDT until April 29 at 2:30PM CDT by NWS Paducah KY
AREAS AFFECTED: Alexander, IL; Jackson, IL; Union, IL; Bollinger, MO; Cape Girardeau, MO; Perry, MO; Scott, MO
DESCRIPTION: SVRPAH The National Weather Service in Paducah has issued a * Severe Thunderstorm Warning for... Union County in southern Illinois... Southeastern Jackson County in southern Illinois... Northwestern Alexander County in southern Illinois... East central Bollinger County in southeastern Missouri... North central Scott County in southeastern Missouri... Southeastern Perry County in southeastern Missouri... Cape Girardeau County in southeastern Missouri... * Until 230 PM CDT. * At 136 PM CDT, severe thunderstorms were located along a line extending from near Daisy to near Advance, 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... Old Appleton, Cape Girardeau, Pocahontas, Millersville, Cobden, Jackson, Whitewater, Alto Pass, Cape Girardeau Airport, Burfordville, Bollinger Mill State Historic Site, Dutchtown, Gordonville, Ware, Delta, Jonesboro, Allenville, Trail Of Tears State Park, Daisy, and East Cape Girardeau. This includes Interstate 55 between Mile Markers 90 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 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
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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