Hurricane Milton weakened slightly overnight but remained a formidable and growing Category 4 hurricane early Tuesday morning on a path toward a devastating landfall along Florida’s Gulf Coast.

The rapidly developing hurricane that shows no signs of stopping won’t technically become a Category 6 because the category doesn't exist at the moment. But it could soon reach the level of a hypothetical Category 6 experts have discussed and stir up arguments about whether the National Hurricane Center’s long-used scale for classifying hurricane wind speeds from Category 1 to 5 might need an overhaul.