 The National Weather Service in the Quad Cities has issued a tornado warning for southwestern Cedar County, southern Johnson County, northeastern Washington County, northwestern Muscatine County, southeastern Iowa County, until 6.30 p.m. At 5.48 p.m., a severe thunderstorm capable of producing a tornado is located over Amish, or 14 miles southwest of Iowa City, moving east at 45 miles an hour. Expected hazards include tornadoes.