Meteorologists are combing through the damage from last week's historic tornado outbreak in Alabama, hoping to find clues about how to save more lives in the future.
Storm forensics experts have begun to put into historical perspective the massive twister outbreak that hit Alabama and six other Southern states. The Tuscaloosa twister alone may register as the most powerful long-track tornado in US history.
Churches, nonprofits, and government support teams race toward Alabama as tornado victims wander the rubble. Toothbrushes, clean water, and a roof to sleep under are among the most pressing needs.
President Obama travels to Alabama Friday to see first-hand the impact of tornadoes whose casualty toll across six states rises to 319.
Women line up to cast their vote during gubernatorial elections in Kaduna, Nigeria. Two states in Nigeria's Muslim north voted for candidates after their polls were delayed by violence that killed at least 500 last week after the oil-rich nation's presidential election.
The nation's Storm Prediction Center in Norman, Okla., reports that tornadoes this year have already claimed more lives than all of last year, possibly making this the deadliest tornado outbreak since the 1974.
It's not easy to prepare an entire city for a mile-wide tornado like the one that hit Tuscaloosa in Alabama. That makes individual preparedness – and rescue and recovery – especially important. Obama will tour the area Friday.
The death toll from Wednesday's tornado outbreak across the South is now likely to top 200, with at least 131 fatalities in Alabama. Gov. Robert Bentley defends the state's preparedness.
President Obama and Michelle Obama, the first lady, prepare to board Air Force One at Andrews Air Force Base, Md., on April 29, as they traveled to Tuscaloosa, Ala. to visit tornado damaged areas.