Twice a year, Miami experiences extreme high tides, known as "king tides," brought on by gravitational forces. Without any help from rainfall, they can leave streets, yards and driveways under nearly a foot of water. These days, the phenomenon is becoming more of a rule than an exception in the Sunshine State. Experts say it is due to climate change, which is likely to force even higher tides that will push sea-water through storm sewers and back into streets.
"This appears to be occurring frequently, particularly in some parts of Miami Beach," says Jayantha Obeysekera, chief modeler for the South Florida Water Management District and a member of the National Climate Assessment Advisory Committee.