 The National Weather Service in the Quad Cities has issued a severe thunderstorm warning for Buchanan County, Northern Benton County, Western Delaware County, Northwestern Linn County until 5.30 p.m. At 4.35 p.m., severe thunderstorms were located along a line extending from near Jessup to Garrison, moving east at 20 miles an hour. Expected hazards include 70 miles an hour wind gusts and quarter-size hail. Hail damage to vehicles is expected.