A severe thunderstorm sweeping across the Merrimack Valley and Southern New Hampshire last week caused power failures for thousands of homes and brought a tornado warning for the area.
During the storm on Wednesday afternoon of last week, the National Weather Service issued the tornado warning for Greater Haverhill.
Just after the tornado warning ended at 3:15 p.m., National Grid reported widespread power failures in the Valley, which left thousands of customers without power.
They included more than 4,000 customers in Haverhill's Groveland Street and East Broadway area, Salem Street and Old Groveland Road area, and Northern Essex Community College area. Power was restored to those areas by late afternoon.
In Methuen's Timony Grammar School area, 1,237 customers lost power for part of the afternoon. In the the Ward Hill section of Haverhill, 3,521 customers were without power.
Across the area, heavy winds knocking trees onto roads, causing traffic delays.
In Methuen, a tree fell at East and Lawrence streets, causing a traffic snarl. A crew was sent to the area to remove the tree, police said. Methuen police urged drivers across the city to use caution as the storm continued.
In Pelham, trees fell on Bush Hill Road, causing traffic into a single lane. The Concert on the Green scheduled for Wednesday night was also canceled in Plaistow.
The traffic lights at Prospect Street and Swan Street in Methuen were not functioning during part of he afternoon, according to police. Crews eventually rectified the problem, police said.