Tornado Watch: Eastern Iowa under watch; Johnson, Washington, and Linn Counties among those with severe thunderstorm warning

From the National Weather Service in the Quad Cities:

The National Weather Service in the Quad Cities has issued a * Severe Thunderstorm Warning for... Northwestern Louisa County in southeastern Iowa... Eastern Keokuk County in southeastern Iowa... Johnson County in east central Iowa... Washington County in southeastern Iowa... Southern Iowa County in east central Iowa... * Until 415 PM CDT. * At 309 PM CDT, severe thunderstorms were located along a line extending from Parnell to 6 miles northwest of Washington to near Fairfield, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Iowa City, Washington, Columbus Junction, Coralville, North Liberty, Williamsburg, Kalona, Tiffin, Wellman, Lone Tree, University Heights, North English, Riverside, Oxford, Hills, Brighton, Richland, Ainsworth, Columbus City and Crawfordsville. This includes the following highways... Interstate 80 in Iowa between mile markers 221 and 250. Interstate 380 between mile markers 1 and 7. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a sturdy building.