A line of strong thunderstorms swept through the area between 5 and 6 p.m. Friday, leaving thousands of homes without power in Portage and Summit counties.

Kent State University authorities sounded tornado warning sirens on campus at 5:48 p.m. after police received a call from a man who said he believed he spotted a funnel cloud moving north of the campus, university spokesman Eric Mansfield tweeted.

The warning was cleared at 6:13 p.m. and there was no damage to the campus, he said.

In Portage County, FirstEnergy’s outage tracking website showed storm-related outages affecting 9,286 customers, including 3,555 in Kent, 1,245 in Freedom Township, 1,219 in Garrettsville, 919 in Franklin Township, 752 in Hiram Township, 483 in Windham, 367 in Hiram, 176 in Nelson Township, 148 in Mantua Township, and 141 in Streetsboro among the hardest-hit communities. In Summit County, power was lost for 3,884 customers, including 2,080 in Stow and 1,264 in Akron. Smaller outages also were reported in communities across the region, with no immediate timetable from FirstEnergy for restoring power.