Weather Alert in Illinois
Flood Warning issued March 6 at 11:47AM CST until March 15 at 9:00AM CDT by NWS Paducah KY
AREAS AFFECTED: Gallatin, IL; Hardin, IL; Crittenden, KY; Union, KY
DESCRIPTION: ...The Flood Warning is extended for the following river in Indiana...Kentucky...Illinois... Ohio River at Newburgh Dam and Shawneetown. .Recent and expected heavy rains are projected to raise water levels into flood by next week on the Ohio River at Newburgh Dam and Shawneetown. Both locations are projected to crest in minor flood later in the week. For the Ohio River...including Newburgh Dam, Shawneetown...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Ohio River at Shawneetown. * WHEN...From late Sunday night to Sunday, March 15. * ADDITIONAL DETAILS... - At 11:30 AM CST Friday the stage was 25.3 feet. - Forecast...The river is expected to rise above flood stage early Monday morning to a crest of 35.2 feet Thursday morning. It will then fall below flood stage Sunday, March 15. - Flood stage is 33.0 feet.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov.
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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
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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