A Microburst Hits Logan As Severe Storms Knock Out Power For Some Across Mass.

A string of powerful thunderstorms rumbled through eastern Massachusetts Wednesday, leaving power outages, downed trees and delayed flights in their wake.

More than 7,000 electrical customers were without power as of 6:40 p.m., according to the Massachusetts Emergency Management Agency. That's down from more than 13,000 in the immediate wake of the storms.

A microburst with wind gusts topping 74 mph hit Logan Airport, according to the National Weather Service. Microbursts are brief, intense columns of sinking air that can cause severe damage.

Departing flights were delayed an hour or more as a result. Some inbound flights were delayed more than three hours.

The intense weather caused damage at the Cottage Park Yacht Club in Winthrop.

Member Teresa Herbert says the strong winds damaged small sail boats.

"All hell broke loose," she said. "The winds were knocking over all the n10 boats, the 420 boats, and all the kayaks were flying off the deck." (Those are all just various small boats.)

Crews are working to remove downed trees in several communities including Brockton.

With reporting from WBUR's Newscast Unit and Roberto Scalese