Sweltering heat and humidity gave way briefly Friday afternoon to a fast-moving band of thundershowers that downed trees and power lines and led to numerous outages across southern Maine.

Central Maine Power reported about 3:30 p.m. that more than 2,800 customers were without power, mostly from high winds that caused tree limbs to break and fall on utility lines. By 10:54 p.m., CMP had 1,571 customers without electricity, including 641 in Cumberland County and 450 in Sagadahoc County.

The Maine Department of Transportation reported that a tree had fallen on a stretch of Interstate 295 in Yarmouth, causing traffic to slow down while it was removed.

The Maine Turnpike Authority reported a crash in Biddeford that was believed to be storm-related.