Two people were killed and three others injured as high winds and torrential rains swept across the Argentine capital and nearby areas in Buenos Aires province, authorities said Monday.
Nearly 1,800 people were evacuated from areas threatened by flooding.
A man in his mid-60s drowned inside his flooded home in the Buenos Aires suburb of Isidro Casanova, paramedics said.
The other fatality was identified as a woman of 30 who was electrocuted inside her house in Lanus, municipal officials said.
Three people suffered injuries when buildings gave way amid the rain and wind, including an octogenarian who was pulled from the rubble of his residence.
Classes were canceled in Buenos Aires province and many schools were turned into temporary shelters for evacuees.
"There are flooded streets and flooded highways in various districts of the Buenos Aires suburbs and the overflowing of the Matanza River caused evacuations in La Matanza and Esteban Echeverria," provincial emergency response chairman Luciano Timerman said.
Traffic in the capital was thrown into chaos by the suspension of metro and commuter rail service and the shutdown of some bus routes.
In city neighborhoods such as Belgrano and La Boca, streets became rivers and dozens of vehicles were swept away by the current, while winds of more than 60 kph (37 mph) toppled trees, electric poles and traffic lights. EFE