. "-5" . . "Parkersburg Tornado" . . "Parkersburg, Iowa" . . "Parkersburg" . . . "319" . "539.21" . . . . "2015" . . . "50665" . . "295.9608" . "-6" . . "1874-12-07" . "Parkersburg, Iowa" . . . . . . . "0.0" . "3729582.87888384" . . . . . "Parkersburg, Iowa#History" . . "3729582.87888384" . . . . "296.0" . . . . "Eastern Parkersburg" . "3740000.0" . . "539.1530541886715" . . . "3740000.0" . . "Parkersburg, IA" .