BUCKHORN, Ky. — Devastated communities across eastern Kentucky began digging out Sunday as the state’s death toll rose again  and another round of storms threatened to expand the historic flooding.

The death toll was 28 as of Sunday evening, according to the governor’s office, up from 26 earlier in the day. State officials said they still expect the death count to grow in the coming days.

Dozens of people remained unaccounted for, and some areas were inaccessible to search-and-rescue teams. Spotty cellphone service added to the chaos.

Signs of survival and heroism were everywhere, Gov. Andy Beshear said.

“Many people … have lost everything, but they’re not even getting goods for themselves, they’re getting them for other people in their neighborhoods, making sure that their neighbors are OK,” Beshear said.

Excessive runoff from showers and thunderstorms Sunday and Monday could result in additional flooding of rivers, creeks and streams, the National Weather Service warned. Rainfall rates of up to 2 inches an hour could spark flash flooding, especially in areas that see repeated rounds of thunderstorms.

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Hard-hit counties, including Floyd, Knott and Perry, were under alert. Power, water, shelter and cell service are major issues in some communities, Beshear said. The flooding overwhelmed neighborhoods where people didn’t have much to begin with, he said, and a heat wave forecast this week will deepen the suffering.

The flooding caused hundreds of millions of dollars of damage and displaced hundreds of people, he said.

“We want to make sure that we wrap our arms around our eastern Kentucky brothers and sisters and make sure that they are OK,” Beshear said. “We will be there for you today, tomorrow, next week, next year. We are not going anywhere. We are going to help you rebuild.”

Almost a foot of rain; more is coming

The hardest hit areas of eastern Kentucky received almost a foot of rain late last week. The North Fork of the Kentucky River reached 20.9 feet in Whitesburg, more than 6 feet over the previous record, and crested at a record 43.5 feet in Jackson, National Weather Service meteorologist Brandon Bonds said.

Up to 4 inches of rain fell in some areas Sunday, the National Weather Service said, with more precipitation possible.