Weather Alert in Iowa
Flood Warning issued August 3 at 7:10PM CDT until August 4 at 9:00AM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Linn, IA
DESCRIPTION: ...The National Weather Service in Quad Cities IA IL has issued a Flood Warning for the following rivers in Iowa... Cedar River AT Palo Blairs Ferry Rd affecting Linn County. * WHAT...Minor flooding is forecast. * WHERE...Cedar River at Palo Blairs Ferry Rd. * WHEN...From late tonight to late tomorrow morning. * IMPACTS...At 12.5 feet, Minor Flood Stage. The Chain Lakes area is affected by flood waters. * ADDITIONAL DETAILS... - At 6:15 PM CDT Sunday the stage was 12.5 feet. - Forecast...The river is expected to rise to a crest of 12.5 feet just after midnight tonight. - Flood stage is 12.5 feet.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Monday morning at 900 AM CDT.
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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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