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The out of bounds system, often referred to as the “Bermuda High,” is banked unusually far west — helping clockwise winds to spread a southerly breeze over most of the eastern half of the nation.

To the east, the Bermuda High is sweeping a stream of sultry air and deep moisture northward over the west Atlantic.

And those storms pose a threat to the U.S. because a high-pressure area called the Bermuda high has pushed farther west, which makes it more likely they will hit the East or Gulf coast.

East of the cold front, the large Bermuda High over the western Atlantic is pumping hot, humid air northward across the Mid-Atlantic.

Two major factors are altering Hurricane Dorian’s path: The jet stream and the Bermuda High.