Weather Alert in Nebraska
Flood Advisory issued September 1 at 11:56AM CDT until September 1 at 3:00PM CDT by NWS Omaha/Valley NE
AREAS AFFECTED: Jefferson, NE; Saline, NE
DESCRIPTION: * WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast Nebraska, including the following counties, Jefferson and Saline. * WHEN...Until 300 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Water over roadways. * ADDITIONAL DETAILS... - At 1153 AM CDT, Doppler radar indicated heavy rain due to thunderstorms this morning, bringing small stream flooding. Between 2 and 4 inches of rain have fallen. - Some locations that will experience flooding include... Fairbury, Wilber, Plymouth, Western, Daykin, Endicott, Jansen, Tobias, Swanton, Harbine, Cub Creek Recreational Area, Swan Creek Wildlife Management Area, The Highway 41 and 15 South Junction, Crystal Springs Campground, Willard Meyer Recreation Area, Rock Creek Station State Historical Park, Camp Jefferson, Gladstone and Swan Creek Reservoir Number 2.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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