Overview: A semi-isolated storm on the southern end of a larger thunderstorm complex produced a brief tornado.
End date: April 13, 2014
End time: 5:58 pm CDT
End location: 0.5 miles north of Lone Tree, IA
End lat/lon: 41.5039 / -91.4301
Survey summary: A team from the National Weather Service Quad Cities Forecast Office surveyed the area around Lone Tree late this morning. No damage was found. The tornado path information is estimated from witnesses and radar. Several witnesses described a funnel that went up and down numerous times. Photo and video documentation show that a tornado did touch down at least briefly to the west and northwest of town.
EF scale: The Enhanced Fujita scale classifies tornadoes into the following categories: