The Storm Prediction Center has issued a Severe Thunderstorm Watch in effect until 5pm for the following counties, Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard, Mitchell, Winneshiek, Black Hawk, Boone, Bremer, Butler, Calhoun, Cerro Gordo, Emmet, Franklin, Grundy, Hamilton, Hancock, Hardin, Humboldt, Jasper, Kossuth, Marshall, Palo Alto, Pocahontas, Poweshiek, Story, Tama, Webster, Winnebago, Worth, Wright, Benton, Buchanan, Delaware, Dubuque, Iowa, Jackson, Jones and Linn. A line of severe thunderstorms continues racing through SE Minnesota. Hail up to the size of quarters was reported near Rochester MN within the last 30 minutes. Large hail and damaging winds will be the main threats with this activity as it moves into the state this afternoon. Additional development is also likely to the west of this line.