State Forest Fire Service official Stephen Maurer says that by 4 p.m., the fire was 95 percent contained and he expected it to be completely surrounded by Thursday night.
He says there were no injuries, no property damage and no evacuations because of the fire in Edison, about 30 miles southwest of Manhattan.
The fire happened near an industrial complex but officials said no buildings were under a serious threat largely because it was hemmed in by the Raritan River and a marshy area.
Maurer says rain expected to fall Friday would likely put out whatever is left of the fire that was first reported around noon Thursday.
