Climate Central: After the devastation of Hurricane Katrina, New Orleanians thought they knew what areas were susceptible to flooding during a storm. So when Hurricane Isaac, a much weaker storm than Katrina, bore down on the city in 2012, those who live to the west of Lake Pontchartrain weren't worried, as they had been spared the raging waters that inundated so much of the city during Katrina.
As Hurricane Isaac dumped rain on the greater New Orleans area, the storm created a surge on Lake Pontchartrain that...