Weather Alert in Indiana
Flood Watch issued April 3 at 11:05AM CDT by NWS Chicago IL
AREAS AFFECTED: Porter; Jasper
DESCRIPTION: ...The National Weather Service in Chicago IL has issued a Flood Watch for the following rivers in Indiana... Kankakee River at Dunns Bridge affecting Jasper and Porter Counties. ...The Flood Watch is extended for the following rivers in Indiana... Kankakee River at Shelby affecting Lake IN and Newton Counties. For the Kankakee River...including Dunns Bridge, Shelby...flooding is possible. * WHAT...Flooding is possible. * WHERE...Kankakee River from US-421 south of La Crosse downstream to IN-49 south of Kouts, including the Dunns Bridge gauge. * WHEN...From Sunday morning until further notice. * IMPACTS...At 10.0 feet, Low-lying agricultural land is inundated near the river. * ADDITIONAL DETAILS... - At 10:00 AM CDT Friday the stage was 9.4 feet. - Forecast...Flood stage may be reached Sunday morning. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.
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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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