Weather Alert in Iowa
Flood Warning issued April 28 at 7:09PM CDT until May 4 at 9:00PM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Clinton, IA; Scott, IA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Wapsipinicon River near De Witt 4S. * WHEN...Until late Sunday evening. * IMPACTS...At 12.0 feet, Overbank flooding occurs. Water affects residences along the river between Wheatland and Calamus. Water affects businesses along the river near Calamus. * ADDITIONAL DETAILS... - At 6:30 PM CDT Monday the stage was 11.0 feet. - Forecast...The river is expected to rise to a crest of 11.9 feet early Friday afternoon. It will then fall below flood stage early Sunday afternoon. - Flood stage is 11.0 feet.
INSTRUCTION: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued byTuesday evening at 715 PM CDT.
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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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