Weather Alert in Iowa
Flash Flood Warning issued July 11 at 9:21PM CDT until July 12 at 2:30AM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Des Moines, IA; Henry, IA; Lee, IA; Van Buren, IA; Hancock, IL; Henderson, IL; McDonough, IL; Warren, IL; Clark, MO; Scotland, MO
DESCRIPTION: At 921 PM CDT, local law enforcement reported water covering River Road by the Keokuk Yacht club. Heavy rain was ending across the warning area with between 2 and 3.5 inches of rain having occurred in less than 2 hours across parts of the area. Despite the rain diminishing, ongoing high water and flash flooding is still likely. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Burlington, Fort Madison, Keokuk, Monmouth, Kahoka, Memphis, Oquawka, Nauvoo, West Burlington, Hamilton, Warsaw, La Harpe, Roseville, West Point, Dallas City, Danville, Donnellson, Montrose, Stronghurst and Kirkwood.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
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Weather Topic: What are Altocumulus Clouds?
Home - Education - Cloud Types - Altocumulus Clouds
Next Topic: Altostratus Clouds
Similar to cirrocumulus clouds, altocumulus clouds are
characterized by cloud patches. They are distinguished by larger cloudlets
than cirrocumulus clouds but are still smaller than stratocumulus clouds.
Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km)
and may resemble, at times, the shape of a flying saucer.
These uncommon formations, called altocumulus lenticularis, are created by uplift
in the atmosphere and are most often seen in close proximity to mountains.
Next Topic: Altostratus Clouds
Weather Topic: What are Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
Next Topic: Cirrostratus Clouds
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