One of several wildfires in New Jersey is threatening dozens of structures, but no evacuation orders were immediately issued, officials said.

The fire in Passaic County’s Pompton Lakes area has burned 100 acres and threatened 55 structures, the New Jersey Department of Environmental Protection Wildfire Service said Saturday morning. The fire caused the closure of the right lane of northbound Interstate 287, officials said.

The Forest Fire Department battled the blaze with fire trucks, ground crews and a helicopter that can drop 350 gallons of water, officials said. They said the structures were protected by local fire companies.

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Another wildfire burning in the Bethany Run area on the border of Burlington and Camden counties in Evesham and Voorhees counties was reported to be 90% contained.

The fire along the Palisades Interstate Parkway in Englewood Bluffs in Bergen County, across the Hudson River from New York, is reported to be 40% contained and does not threaten any structures.

Firefighters say the Pheasant Run wildfire in Gloucester County’s Glassboro wildlife preserve is 75% contained.

The National Weather Service issued a red flag warning, saying high winds and low humidity could help fires spread quickly.

New Jersey has not had measurable precipitation in more than a month, setting a new record, the weather service said.