Weather Alert in Louisiana
Flood Warning issued May 8 at 8:03PM CDT until May 9 at 3:02AM CDT by NWS New Orleans LA
AREAS AFFECTED: St. Helena, LA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Louisiana... Tickfaw River at Liverpool affecting St. Helena Parish. * WHAT...Minor flooding is occurring. * WHERE...Tickfaw River at Liverpool. * WHEN...Until late tonight. * IMPACTS...At 9.0 feet, Pastures and crop land adjacent to the river will flood. Rural areas near the river will be threatened with flooding. * ADDITIONAL DETAILS... - At 7:15 PM CDT Thursday the stage was 9.4 feet. - Bankfull stage is 6.0 feet. - Forecast...The river is expected to fall below flood stage late this evening and continue falling to 2.2 feet Tuesday evening. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
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. Additional information is available at www.weather.gov/lix. Click on the Rivers and Lakes menu for forecasts and observations. The next statement will be issued late tonight at 315 AM 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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