[Update: 9:55 p.m. ET] Flooding from two days of heavy rain in Tennessee is now thought to be responsible for at least 11 deaths there, the Nashville and state emergency management offices said.

The Mayor's Office of Emergency Management in Nashville announced Sunday night that it had confirmed five fatalities in Davidson County - which encompasses Nashville - thought to be flood-related.

Earlier Sunday, the Tennessee Emergency Management Agency said it had confirmed seven flood-related fatalities throughout the state, including - at the time of that announcement - one in Davidson County.

[Posted 8:08 p.m. ET] Some of the worst flooding the mid-South has seen in decades has killed seven people in Tennessee, the state's emergency management agency said Sunday, with up to 20 inches of rain falling in parts of the state since Saturday and more expected Sunday evening.

The rains have washed out major roads, caused evacuations, and prompted dam failures. In Nashville, Tennessee, alone, more than 600 people were rescued from the water this weekend, Mayor Karl Dean said at a press conference Sunday afternoon.

As of late Sunday afternoon, Nashville's two-day rainfall total was 13.46 inches, and Sunday's total so far was at 7.14 inches - the highest one-day amount ever recorded for the city, according to the National Weather Service.

Just two days into May, the month already is the wettest May ever recorded for Nashville. The previous record rainfall for May in Nashville was 11.04 inches (May 1983).

The National Weather Service issued a civil emergency message Sunday to central and western Tennessee, telling people to stay off roads because too many are closed and people are getting stranded.

The National Weather Service also issued a flood emergency Sunday for much of central Kentucky - where tens of thousands were trying to get home after this weekend's Kentucky Derby - and in south central Indiana.

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