Hurricane Irma spawned a massive water spout off the South Carolina coast as the region dealt with flooding and severe winds.
A crew from WCIV-TV in Charleston spotted the funnel cloud over the ocean off the Isle of Palms.
The hurricane spread misery into Georgia and South Carolina as it moved inland with winds at 80 km/h, causing flooding and power outages.
Six deaths in Florida have been blamed on Irma, along with three in Georgia and one in South Carolina. At least 35 people were killed in the Caribbean.
Meanwhile aid rushed in to hurricane-scarred Florida today as residents began to dig out, and officials slowly pieced together the scope of Irma's vicious path of destruction across the peninsula.
The fate of the Florida Keys, where Irma rumbled through with Category 4 muscle, remained largely a question mark.
Communication and access were cut and authorities dangled only vague assessments of ruinous impact.
"It's devastating," Florida Governor Rick Scott said after emerging from a Monday fly-over of the Keys.
A Navy aircraft carrier was due to anchor off Key West to help in search-and-rescue efforts.
Drinking water supplies in the Keys were cut off, fuel was running low and all three hospitals in the island chain were shuttered.
The governor described overturned mobile homes, washed-ashore boats and rampant flood damage.
In a parting blow to the state before pushing on to Georgia and beyond, the storm caused record flooding in and around Jacksonville, causing untold damage and prompting dozens of rescues.