It doesn't look like it makes much sense to me.
"People living in the South along the Atlantic and Gulf Coasts have a higher likelihood of dying from a natural hazard compared to residents of the Great Lakes area and urbanized Northeast."
But the map doesn't really show that, does it?
It appears to me that many of the larger red areas are popular travel destinations: Flagstaff to the Grand Canyon, Lake Tahoe to Yosemite, Glen Canyon to Canyonlands to Arches/Moab, Aspen CO ski areas, Black Canyon of the Gunnison, the Adirondacks, Pine Ridge NE, Black Hills/Badlands of SD, Columbia River Gorge (WA/OR), etc.
So you get people with little wilderness experience or preparation who flock to these popular, scenic areas, and they get lost and die of hypothermia and hypothermia (even if they fell and broke their leg, they probaby died from one or the other).
And they say they were killed by Nature. Huh-uh.
Someone probably got paid a lot of money to sift through causes of death, and came up with this.
Pfffffttt!
Sue