Weather Alert in Iowa
Flood Warning issued June 17 at 3:34AM CDT until June 20 at 1:00PM CDT by NWS Des Moines IA
AREAS AFFECTED: Black Hawk, IA; Bremer, IA; Butler, IA
DESCRIPTION: ...The Flood Warning continues for the following rivers in Iowa... Winnebago River at Mason City affecting Cerro Gordo, Worth and Floyd Counties. Shell Rock River at Shell Rock affecting Black Hawk, Bremer and Butler Counties. * WHAT...Minor flooding is forecast. * WHERE...The Shell Rock River at Shell Rock, or from Flood Creek near Clarksville to the Cedar River. * WHEN...From this evening to early Friday afternoon. * IMPACTS...At 12.5 feet, Seepage occurs in several basements close to the river. * ADDITIONAL DETAILS... - At 2:45 AM CDT Tuesday the stage was 10.3 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of 12.7 feet early tomorrow afternoon. It will then fall below flood stage Friday morning. - Flood stage is 12.0 feet.
INSTRUCTION: For the latest waterway observations and forecasts refer to weather.gov/desmoines/water. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. River forecasts include observed precipitation plus forecast precipitation over the next 24 hours.
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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