An intense, swiftly moving thunderstorm bearing high winds struck Newtown late Tuesday afternoon, dropping trees across town, some of which brought down electric lines as they fell, causing approximately 4,600 electric outages by 5 pm.

By midnight, the number of outages had dropped to about 1,200, as Eversource electric utility crews worked to repair the storm damage, according to Eversource spokesman Mitch Gross.

By 10:30 am Wednesday, the number of outages had dropped to 79. Eversource has 11,072 electric customers in Newtown.

Local officials knew of no injuries caused by the storm.

Although the storm was brief, it was intense, causing the tops of trees to violently swirl and shake amid the high winds, with some complete trees or tree sections falling to the ground under the stressing winds.

Those winds caused several trees to fall at a residential property at 11 Oakview Road, damaging a house and a camping vehicle there, officials said.

A tree also fell onto a house at 18 Washington Avenue, but it did not damage the structure.

Joe Tani, town highway department operations manager, said that a number of local roads were temporarily closed to traffic due to fallen trees.

Among the roads that were temporarily closed to through-traffic were Oakview Road, Hi Barlow Road, Eden Hill Road, Castle Meadow Road, Jeremiah Road, Taunton Hill Road, Russett Road, Aunt Park Lane, Hattertown Road, Johnny Appleseed Drive, and Orchard Hill Road, he said.

Also, a section of Poverty Hollow Road was closed for a time, police said.

“We’re in the process of cleaning up” the storm-related damage, Mr Tani said.

Although all the roads which had been closed were open to traffic by Wednesday morning, some streets still had partial obstructions and were in the process of being cleaned up, Mr Tani said, adding he expected that the full cleanup project would require “a couple of days” of work.

Even though Eversource has been doing extensive tree trimming in the area to prevent storm-related power outages, when the winds blow as hard as they did during the intense thunderstorm, trees will come down, he said.

Overall, there were more than 30 storm-related emergency calls received by fire companies. All five local volunteer fire companies responded to various calls.

The first storm-related emergency call was received at 4:07 pm by Newtown Hook & Ladder firefighters for wires down at 19 Boulevard. Such emergency calls continued until 9:07 pm for an investigation by Hook & Ladder at Prospect Drive.

A large majority of those calls involved utility wires coming down.

Sandy Hook Volunteer Fire & Rescue Company Chief Bill Halstead said that Eversource repair crews were able to restore electric service to customers with outages relatively quickly.

Sandy Hook Center area had its power restored about 10 pm Tuesday, he noted.

The fire companies in town responded to storm-related problems as they normally do and suitably dealt with the problems caused by the weather, he said.

Police Lieutenant Christopher Vanghele said that police responded to a few motor vehicle accidents that were storm-related.

When the electricity  fails, traffic signals stop working, he noted, requiring police to take measures to control traffic flow at busy intersections, he said.

The Parks & Recreation Department said Wednesday that one section of the walking trail at Fairfield Hills near the High Meadow is closed for cleanup work. That area is roped off to prevent its use. The department will issue a notice when the trail is fully open.