Israeli forces have issued evacuation orders over the last month at an "unprecedented pace", with 13 issued since 22 July, according to a report by AP news agency.

The UN says that at least 84 percent of Gaza now falls within the evacuation zone, with 90 percent of the enclave's population displaced since October and crowded into an ever-shrinking "humanitarian zone" along the southern shoreline.

In August alone, evacuation orders have been issued roughly every two days and have displaced nearly 250,000 people, the UN said.