Traffic lights on the Black Horse Pike in and around Egg Harbor Township have gone dark as a heavy thunderstorm sweeps through South Jersey.

As of 6 p.m., Atlantic City Electric was reporting 600 Atlantic County customers without power in addition to a dozen in Cape May County and 30 in Cumberland County.

The thunderstorms, which began at about 5 p.m., were expected to be accompanied by wind gusts of 35 mph and possible small hail, the National Weather Service said.