Rising sea levels

Update: The original version of this story incorrectly summarized this study as showing populations to be displaced by 2100 if current trends continue. Author Ben Strauss sent the following correction: "by 2100, we would most likely be *locked in* to such an outcome in a more distant future, time unspecified, but essentially inevitable." We have updated the story accordingly. 

The warming climate is causing sea levels to rise as oceans expand, and, combined with more frequent storms, the effects could be devastating.

A new map shows more than 1,400 towns in the U.S., 30 in Washington state, where half the population will be displaced  if current trends continue through the end of this century.

Thousands of homes in Washington and Oregon could be inundated by rising seas caused by global warming over the next century, according to research by the non-profit Climate Central and the University of Arizona.

By calculating how many Americans live less than 1 meter above the high tide line, the researchers found 10,500 homes in Washington and 7000 in Oregon that would be flooded by rising seas.

The biggest concentrations of vulnerable homes are in Seattle, and Warrenton and Seaside, Ore.