Tornadoes touched down in southern Louisiana Tuesday, wiping houses from their foundations and downing power lines a severe line of weather moving across the region. Louisiana Governor John Bel Edwards has declared a state of emergency, according to a spokesperson Tuesday afternoon. At least three tornadoes have touched down - one in the eastern part of New Orleans, another near the town of Donaldsonville and another in the town of Killian. A spokesman for the Emergency Medical Service described most of those injured Tuesday as “walking wounded,” with minor cuts and scrapes.