PANAMA CITY, Fla.  — The devastation inflicted by Hurricane Michael came into focus Thursday with rows upon rows of homes found smashed to pieces, and rescue crews began making their way into the stricken areas in hopes of accounting for hundreds of people who may have defied evacuation orders.

At least two deaths were blamed on Michael, the most powerful hurricane to hit the continental U.S. in over 50 years, and it wasn’t done yet: Though reduced to a tropical storm, it brought flash flooding to North Carolina and Virginia, soaking areas still recovering from Hurricane Florence.

Under a perfectly clear blue sky, families living along the Florida Panhandle emerged tentatively from darkened shelters and hotels to a perilous landscape of shattered homes and shopping centers, beeping security alarms, wailing sirens and hovering helicopters.

Gov. Rick Scott said the Panhandle woke up to “unimaginable destruction.”

“So many lives have been changed forever. So many families have lost everything,” he said.

The full extent of Michael’s fury was only slowly becoming clear, with some of the hardest-hit areas difficult to reach because of roads blocked by debris or water. An 80-mile stretch of Interstate 10, the main east-west route along the Panhandle, was closed.

Some of the worst damage was in Mexico Beach, where the hurricane crashed ashore Wednesday as a Category 4 monster with 155 mph (250 kph) winds and a storm surge of 9 feet (2.7 meters). Video from a drone revealed widespread devastation across the town of about 1,000 people.

Entire blocks of homes near the beach were obliterated, reduced to nothing but concrete slabs in the sand. Rows and rows of other homes were turned into piles of splintered lumber or were crumpled and slumped at odd angles. Entire roofs were torn away and dropped onto a road. Boats were tossed ashore like toys.

A National Guard team got into Mexico Beach and found 20 survivors overnight, and more crews were pushing into the area in the morning, with the fate of many residents unknown, authorities said. State officials said 285 people in Mexico Beach had refused to leave ahead of the hurricane despite a mandatory evacuation order.

Mishelle McPherson and her ex-husband searched for the elderly mother of a friend. The woman lived in a small cinderblock house about 150 yards from the Gulf and thought she would be OK.

Her home was reduced to crumbled cinderblocks and pieces of floor tile.

“Aggy! Aggy!” McPherson yelled. The only sound that came back was the echo from the half-demolished building and the pounding of the surf.

“Do you think her body would be here? Do you think it would have floated away?” she asked.

As she walked down the street, McPherson pointed out pieces of what had been the woman’s house: “That’s the blade from her ceiling fan. That’s her floor tile.”