Two people died on Tuesday in flash floods from torrential rains that turned the streets of Istanbul into rushing rivers, officials said.
The nighttime storm partially flooded a subway station and forced the evacuation of dozens of people from a city library, media reports said.
Television and social media images showed rushing waters sweeping away cars and city market stalls.
The governor's office said two people died.
The rains followed a particularly dry summer that saw the water reservoirs of the city of 16 million people fall to nine-year lows.
Turkey's emergency service said two people also died on Tuesday and four were missing in floods that hit the northwestern city of Kirklareli.
The nighttime storm partially flooded a subway station and forced the evacuation of dozens of people from a city library, media reports said.
Television and social media images showed rushing...