Ten years ago, Hurricane Katrina became one of the worst natural disasters in U.S. history.
As the climate warms, rising sea levels will mean more damage from hurricane storm surge.
The city recorded more than 7 inches of rain in 24 hours, the third-highest single day rainfall total for any day since record-keeping began in 1891.
What scientists know well, and what's left to learn, about extreme weather and climate change.
Nationwide, the number of days with the most intense precipitation continues to climb.
The highlights of NOAA's 2013 Spring climate summary.
By 2100, sea level may be as high as six-and-a-half feet above 1992 levels, putting the homes of 7.8 million Americans at risk of being flooded.
Global sea level rise since 1880.