NEW : Bridge swept away by floodwaters in Giles County , Tennessee . Motorist in Tennessee drowns trying to cross a flooded road . Falling trees kill two people in Arkansas . CNN meteorologist Sherri Pugh said severe weather could last until Saturday in the South and Great Plains , with heavy rain , hail , damaging wind and flash flooding possible . Weather knocks out power to 42,000 customers in Kentucky .
NEW : Bridge swept away by floodwaters in Giles County , Tennessee . Motorist in Tennessee drowns trying to cross a flooded road . Falling trees kill two people in Arkansas . Weather knocks out power to 42,000 customers in Kentucky .