Sao Paulo, Brazil Flooding
© Thaddeus PawlowskiAerial view of Sao Paulo flooding
Violent storms and heavy rainfall hit Sao Paulo in Brazil on December 10, 2014, causing flooding and traffic chaos as authorities announced a state of alert in some parts of the city.

Thunderstorm dumped more than two inches of rain in only a few hours. Streets turned into flowing rivers. Cars were swept away by flash floods in parts of the city, where mud and debris clogged the streets.

Sao Paulo, home to around 20 million people, experienced months of the worst drought in decades.