Weather Alert in Iowa
Flood Watch issued August 25 at 8:33AM CDT until August 30 at 7:00PM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Clinton; Scott
DESCRIPTION: ...The Flood Watch is extended for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. * WHAT...Flooding is possible. * WHERE...Wapsipinicon River near De Witt 4S. * WHEN...From late Wednesday night to Saturday evening. * IMPACTS...At 11.5 feet, Moderate Flood Stage. Water affects homes along old U.S. Highway 61. * ADDITIONAL DETAILS... - At 7:30 AM CDT Monday the stage was 9.4 feet. - Forecast...Flood stage may be reached early Thursday morning. - Flood stage is 11.0 feet.
INSTRUCTION: If you are in the watch area, remain alert to possible flooding. The next statement will be issued by Tuesday morning at 845 AM CDT.
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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
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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