Another round of showers and severe thunderstorms moved through the region Thursday — and more of the same is expected Friday.

A flash flood watch remains in effect through late tonight for northeast New Jersey, southern Connecticut, the five boroughs of New York City, Long Island and the Hudson Valley.

Heavy showers and scattered thunderstorms will continue to develop and move northeast across the region. Although most small rivers and streams have receded below their flood stages, they are still near bankfull. And residents in the areas hardest hit by floods Wednesday and Thursday are bracing for more.

The heavy downpours caused sudden flooding in Rockland County prompted a short  state of emergency. County Executive C. Scott Vanderhoef said the flooding was the worst since tropical storm Floyd in 1999.  By early Thursday evening, that state of emergency had been lifted.

Highway flooding stranded several cars, water threatened the generators at Nyack Hospital and a high school graduation was postponed to Saturday.

In New Jersey, flash flooding from Saddle River had residents cleaning up into the night Thursday night.

Earlier in the day, Saddle River was under water. People used boats to get around. The local hardware store was damaged. Many are worried another round of rain could cause more flash flooding.

After lingering storms Friday, better weather is expected late Saturday and Sunday.

(Source: NBC New York)