Weak tornadoes touch down near Kansas City, Mo.
Updated at 3:01 p.m. ET
KANSAS CITY, Mo. - The National Weather Service says at least two tornadoes it describes as very weak and brief have touched down and lifted near Kansas City, Mo.
Warning sirens have been shut off downtown. Just before noon, storm sirens were sounding inside City Hall, and officials took cover, CBS News affiliate KCTV-TV in Kansas City reports.
Meteorologist Julie Adolphson says there were no immediate reports of injuries or significant damage resulting from the tornadoes reported in suburban Overland Park, Kan., and near Harrisonville, Mo., south of Kansas City.
Adolphson says the tornadoes at issue are short-lived and are considered at the weakest end of the rating scale. Such tornadoes don't pack winds greater than 75 mph, in many cases amounting to a swirling dust devil.
The afternoon's tornadoes comes after a violent storm system rumbled through the central U.S. killing at least 14 people over two days and hampering rescue efforts in a city slammed by a massive twister days earlier. The system followed closely behind the one that spawned the massive twister that struck Joplin, Mo., and killed more than 120 people.
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Several tornadoes touched down Tuesday in Oklahoma City and its suburbs, killing at least eight people and injuring at least 70 others, authorities said. Among those killed was a 15-month-old boy, and searchers were looking for his missing 3-year-old brother.
The storms killed two people in Kansas, four in Arkansas and possibly one in Texas.
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Four possible tornadoes may have touched down Wednesday in southern and central Illinois, but they caused little damage and only minor injuries, authorities said. The weather service warned that a wave of more powerful storms could hit the state later Wednesday.
The larger storm system was centered over Missouri and Arkansas and Illinois early Wednesday and moving into western Indiana, Kentucky, Tennessee and Mississippi. The weather service placed much of Illinois and Indiana under a tornado watch, and said isolated tornadoes were possible throughout Ohio when the storms moved into the state Wednesday night.
The system moved into western Arkansas late Tuesday night, bringing with it a tornado that touched down in several small communities over the span of an hour, flattening or damaging houses and scattering debris over a wide area before dissipating at about 1 a.m. Wednesday.