US Gulf of Mexico operators have shut in more than 1.5 million barrels of oil per day, or 82.4% of the region's oil production, as twin storms continue to threaten the area, according to data from the nation's Bureau of Safety and Environmental Enforcement (BSEE).

The agency, which formed its estimates based on operator reports, also believes about 1.54 billion cubic feet per day of natural gas, or 56.9% of current production, has been shut in.

The news comes as Tropical Storm Marco makes a final push across the northern Gulf towards the Louisiana coast, while Tropical Storm Laura was expected to move from the Caribbean Sea to the Gulf of Mexico overnight on Monday.