The watch remains in effect until 9 p.m. across Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester, Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean, Salem, Somerset, Sussex and Warren counties.
The watch -- less severe than a warning -- was also issued for most of Southeastern Pennsylvania.
Storms were expected to arrive between 3 p.m. and 5 p.m., and end between 8 p.m. and 11 p.m.
Straight-line winds, large hail, lightning and flash flooding are also possible.
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