New research uses extreme heat, drought, inland and coastal flooding and wildfires to rank the safety of US states.

While some states have seen significant reductions in population growth, others are seeing their populations boom.

Several storm-battered communities remain disconnected as officials work to restore power, deploy aid, rescue survivors and locate victims.

“The current data that we have, is that it looks like there could be as many as 600 lost lives,” Homeland Security Advisor Liz Sherwood-Randall said Monday. “But, we don’t have any confirmation of ...