I am reminded of the tsunami in Indonesia and Sri Lanka in December when looking at the photographs and video of New Orleans today. Right now I'm watching the live streaming video from one of the local New Orleans television stations, WWL-TV (if you wish to find it, go to WWLTV). An AP story on Yahoo said, "From the air, neighborhood after neighborhood looked like nothing but islands of rooftops surrounded by swirling, tea-colored water." This is just an appalling disaster - the levees have broken through and water is pouring into New Orleans from Lake Pontchartrain. Apparently water is rising in the Superdome, where tens of thousands of people have taken refuge. On WWL they're now broadcasting a helicopter tour of the area (probably from earlier today, because it's in daylight), and are commenting on how high the water has gone - up the eaves on two-story houses (as I'm sure you've seen yourselves on television).
For those who wish to help with the relief efforts, contributions can be sent to the American Red Cross.