Weather Alert in Iowa
Flash Flood Warning issued July 11 at 8:16PM CDT until July 12 at 12:30AM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Des Moines, IA; Henry, IA; Louisa, IA; Muscatine, IA; Henderson, IL; Mercer, IL; Rock Island, IL
DESCRIPTION: At 816 PM CDT, Louisa County law enforcement reported flooding with road closures impacting T Avenue and other roadways near Conesville. Between 2 and 3 inches of rain have fallen across the warned area. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Law enforcement reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Davenport, Moline, Rock Island, Muscatine, East Moline, Aledo, Wapello, Columbus Junction, Oquawka, Silvis, Milan, Coal Valley, New London, Mediapolis, Buffalo, Andalusia, Winfield, Fruitland, Viola and Morning Sun. This includes the following highways... Interstate 280 between mile markers 11 and 18. Interstate 74 in Illinois between mile markers 2 and 7.
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. 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 Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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