The Turkish State Meteorological Service (TSMS) warned that another round of heavy snowfall is expected to hit Istanbul and Turkey's other northwestern parts, which will begin on Friday and continue until Tuesday.

Forecasters warned that the heavy snowfall will also affect east Marmara and western Black Sea regions as about 20-60 cm of snow would blanket some areas in Sakarya, Kocaeli, Düzce, Zonguldak, Bartın, Karabük and Kastamonu provinces.

Meanwhile, Turkish Airlines, AtlasJet and OnurAir announced cancellations for 81 domestic and international flights from and to Istanbul's Atatürk and Sabiha Gökçen airports on late Thursday.