The Sea Has Risen 80 Feet?

I had better call my parents to see if they have had to move because the sea levels have risen approximately 80 feet, and my parent's home is at approximately 70 feet.

Al Gore said in this article that 40% of the North Polar ice cap is disappearing.

These people are examining what they can or should do to deal with the P.R. dimensions of this, but where the scientific consensus is concerned, it's completely unchanged. What we're seeing is a set of changes worldwide that just make this discussion over 10-year-old e-mails kind of silly.* The entire North Polar ice cap is disappearing before our very eyes. It's been the size of the continental United States for the last 3 million years and now 40 percent is gone and the rest of it is going. The mountain glaciers are going. We've had record storms, droughts, fires, and floods. There is an air of unreality in debating these arcane points when the world is changing in such dramatic ways right in front of our eyes because of global warming.

According to HowStuffWorks,

If all of the Antarctic ice melted, sea levels around the world would rise about 61 meters (200 feet).

Now perhaps just the northern ice cap has melted before our very eyes and not the southern ice cap. So the sea levels have only risen 40 feet. If so, then my parents still have some time to escape the coming wrath of nature.