A thunderstorm that hit Watertown Wednesday afternoon caused flooding and other damage. A strong thunderstorm caused chaos which rolled through Watertown late Wednesday afternoon, flooding part of a school, streets and knocking over a tree. The storm cell hit Watertown at about 5:30 p.m. and with several lightning bolts in the area and dumping heavy rain on town, causing flooding in some areas. Flooding was reported around Watertown, including causing water to come into the gymnasium at Cunniff Elementary School on the Westside of town. Street flooding was reported nearby on Warren at Chapman Street, where as much as a foot of water was reported by first responders on the scene, according to scanner reports.