A string of thunderstorms wrought havoc across the state on Sunday afternoon, and more were expected throughout the day.

As of about 4 p.m. Sunday, Eversource was reporting about 7,209 customers in the state were affected by power outages, including 1,014 in Darien, 1,901 in Norwalk, 1,109 in Stamford and 2,626 in Westport.

There were also train delays and scattered accidents throughout the state. In Norwalk, the Department of Transportation was reporting debris on Interstate 95 southbound between exit 14 and 13 around 2:25 p.m. that closed two lanes. Shortly before 4 p.m. Sunday, DOT also reported debris on 95 south between exits 19 and 18. The right and center lanes were closed.

Early Sunday evening, the Westport Police Department issued a traffic advisory, stating that the storm had lead to multiple road closures in town.

“As a result of power outages, traffic control signals are not functioning at many major intersections including the intersections of Post Road East at Compo Road, Hillspoint Road and the Sherwood Island Connector,” the release read. “Portable stop signs have been deployed at various locations. We urge residents to stay home as the clean-up and repairs are conducted. If you must be on the road, please drive with caution and do not attempt to go around police tape and/or barricades. All town agencies are diligently working to alleviate these conditions in partnership with Eversource.”

Updates on the road closures will be provided on the department’s Facebook page.

Some downed wires in Greenwich were causing fires Sunday afternoon, and many police departments were reporting heavy call volumes due to storm damage.

“Several trees, wires & poles down in town creating hazardous conditions and power outages,” tweeted Fairfield Police. “As a result, our phone lines are inundated with calls & are overwhelming the phone system. Use caution & do not approach any downed trees, poles or wires. Call 911 in an Emergency.”

To make matters worse, the thunderstorm warnings remained in effect for several towns, including Branford, Middletown and Guilford, until 4:30 p.m., according to the National Weather Service.