TRENTON - (AP) - Strong thunderstorms are bringingtorrential rains to parts of New Jersey.

The air is unstable as the storms usher in a cold front.

The National Weather Service has issued a severe thunderstormwatch for every county until 4 p.m. Thursday.

Forecasters say wind gusts up to 40 mph and dangerous lightningare possible as the storms move rapidly across the state fromsouthwest to northeast.

The weather service also says there's a flash flood threat forHunterdon, Mercer, Middlesex, Morris, Somerset, Sussex, Warren,Passaic, Hudson, Bergen, Essex and Union counties.

Forecasters say more than an inch and a half of rain could fallover water-soaked ground in those areas.

Some flights at Newark airport are arriving more than two hourslate.