LES CAYES, Haiti (AP) — The death toll from a 7.2-magnitude earthquake in Haiti climbed to 1,297 on Sunday, a day after the powerful temblor turned thousands of structures into rubble and set off franctic rescue efforts ahead of a potential deluge from an approaching storm.

Saturday's earthquake also left at least 5,700 people injured in the Caribbean nation, with thousands more displaced from their destroyed or damaged homes. Survivors in some areas were forced to wait out in the open amid oppressive heat for help from overloaded hospitals.

The devastation could soon worsen with the coming of...