Hail storm in Brazil

A late-fall hailstorm left parts of Sao Paulo covered in white Sunday afternoon.
The storm, which struck between 4 and 5 p.m. local time, lasted only about 30 minutes but left parts of the city buried by large hailstones.
Enough ice accumulated that children were seen playing in yards and streets across the city, even making "snowmen."
Thunderstorms producing hail are not uncommon across southern Brazil in fall and early winter as cooler air throughout the atmosphere is more common allowing the hail to development within the storms.

While hail is not uncommon, the amount and size of the hail which left streets covered, requiring bulldozers to clear some areas is a rare event.
According to the Associated Press, marble-sized hail fell across parts of the city. Some areas still had lingering hail on the ground Monday morning, despite temperatures around 17 C (63 F) for more than 12 hours following the storm.
Dry weather with partial sunshine is expected through Thursday before another storm system brings heavy rain and thunderstorms back to the region Thursday night into Friday.

http://www.accuweather.com/en/weather-news/hailstorm-buries-sao-paulo-in/27258951