In the past one hundred years, the Global Mean Sea Level has risen between 4 and 8 inches, and is currently rising at a rate of approximately 0.13 inches a year. However, the sea level rise “lock-in” – the rise we don’t see now, but which, due to emissions and global warming, is being locked in for the future – is increasing 10 times faster. While our current sea level rise is at a modest, but still threatening inch per decade, the future rise is at a foot per decade.