Impacts from Hurricane Humberto and Invest 94L on the US remain difficult to predict, but risks along the coast between Florida and NC are increasing.

A complicated forecast scenario continues to unfold Friday near the Bahamas as Hurricane Humberto intensifies and a system that is expected to become Imelda develops, strengthens and moves east of the Florida coast.

Hurricane Humberto and a system that may become Tropical Storm Imelda in the coming days are swirling quite close to each other in the western Atlantic Ocean

Strengthening Humberto and developing Imelda staying just off our coast will have some coastal impacts of large swells next week.

If Humberto becomes a major hurricane as expected, it will be the first time since 1935 when a season's first three storms were Category 3 or higher.

Tropical storm alerts have been posted and at least one state has declared a pre-emptive state of emergency as a looming storm system is on its way to becoming future Hurricane Imelda, bringing the potential threat of heavy rain and strong winds to parts of the Southeast.

The Fujiwhara effect is making it difficult for forecasters to predict who could be affected by Hurricane Humberto or Invest 94L. What to know.