Weather Alert in Oklahoma
Flood Warning issued April 19 at 8:50AM CDT until April 21 at 1:16PM CDT by NWS Tulsa OK
AREAS AFFECTED: Adair, OK; Delaware, OK
DESCRIPTION: ...The National Weather Service in Tulsa OK has issued a Flood Warning for the following rivers in Oklahoma... Illinois River near Watts affecting Delaware and Adair Counties. * WHAT...Minor flooding is forecast. * WHERE...Illinois River near Watts. * WHEN...From Sunday morning to early Monday afternoon. * IMPACTS...At 17.0 feet, moderate flooding occurs from the Arkansas border to Fidler's Bend. Farmlands and permanent campgrounds are affected. A few cabins in the Fidler's Bend area may have minor flooding. Extreme turbulence makes the river too hazardous for floating. * ADDITIONAL DETAILS... - At 8:30 AM CDT Saturday the stage was 4.2 feet. - Forecast...The river is expected to rise above flood stage tomorrow morning to a crest of 16.5 feet tomorrow evening. It will then fall below flood stage Monday morning. - Flood stage is 13.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: N/A
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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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