 The National Weather Service in the Quad Cities has issued a tornado warning for northwestern Cedar County, southwestern Jones County, southern Linn County, until 6.15 p.m. At 5.34 p.m., a severe thunderstorm capable of producing a tornado is located over Marion, or near Cedar Rapids, moving east at 40 miles an hour. Expected hazards include tornado and quarter-size hail. Flying debris will be dangerous to those caught without shelter.