At least 22 people were killed and rescue crews searched desperately on Sunday amid shattered homes and tangled debris for dozens of people still missing after record-breaking rain sent floodwaters surging through Middle Tennessee.

Saturday’s flooding in rural areas took out roads, cellphone towers, and telephone lines, leaving families uncertain about whether their loved ones survived the unprecedented deluge. Emergency workers were searching door to door, said Kristi Brown, a coordinator for health and safety supervisor with Humphreys County Schools.

Many of the missing lived in the neighborhoods where the water rose the fastest, said Humphreys County Sheriff Chris Davis, who confirmed the 22 fatalities in his county. The names of the missing were on a board in the county’s emergency center and listed on a city department’s Facebook page.

“I would expect, given the number of fatalities, that we’re going to see mostly recovery efforts at this point rather than rescue efforts,” Tennessee Emergency Management Director Patrick Sheehan said.

The dead included twin babies who were swept from their father’s arms, according to surviving family members, and a foreman at county music star Loretta Lynn’s ranch. The sheriff of the county of about 18,000 people some 60 miles (96 kilometers) west of Nashville said he lost one of his best friends.

Up to 17 inches (43 centimeters) of rain fell in Humphreys County in less than 24 hours Saturday, shattering the Tennessee record for one-day rainfall by more than 3 inches (8 centimeters), the National Weather Service said.

Tennessee Gov. Bill Lee toured the area, calling it a “devastating picture of loss and heartache.” He stopped on Main Street in Waverly where some homes were washed off their foundations and people were sifting through their water-logged possessions. All around the county were debris from wrecked cars, demolished businesses and homes, and a chaotic, tangled mix of the things inside.

The hardest-hit areas saw double the rain that area of Middle Tennessee had in the previous worst-case scenario for flooding, meteorologists said. Lines of storms moved over the area for hours, wringing out a record amount of moisture — a scenario scientists have warned may be more common because of global warming.