As the storm howled around them, Mr. Lowe said, the roof began to lift off, then slap back down. Abaco withstood sustained winds of up to 185 miles per hour that day, with gusts that reached 220 miles per hour. The group sought safety in the bathroom, where they huddled together and prayed, hoping for relief. Mr. Lowe’s son was nestled inside the bathtub, he said.

That’s when the roof flew away.

Exposed to the elements, each person had to step out into the storm. They clung to each other and set out to find refuge.

“I’ve never experienced anything like that in my life,” said Mr. Lowe, who is no stranger to hurricanes but said he could never have imagined the terror of that day.

The group reached a neighbor’s home. Mr. Lowe and his son hunkered down there for a day until a rescue bus was able to pick them up on Monday and take them to a shelter.

On Tuesday night, he was evacuated to Nassau, where Mr. Lowe can get the dialysis treatment he needs three times a week. His son had to stay in Abaco, in the care of Mr. Lowe’s sister-in-law, he said.

“I came here with the clothes that I had on from Saturday,” he said.

Although Mr. Lowe and his son are now safe, his ordeal is, in some ways, only beginning.