A catastrophic and deadly storm surge is likely along portions of the Florida Big Bend coast, where inundation could reach as high as 20 feet.

Hurricane Helene has been upgraded to a Category 4 hurricane as it hurtles toward making landfall on the Florida coast. A Category 4 hurricane is capable of 130 mph to 156 mph winds and can cause severe damage to well-framed homes.

Helene is more then 400 miles across and is one of the largest hurricanes ever to hit the coast of Gulf of Mexico