A relentless heatwave is baking Japan, with 57 people reported dead and 18,347 taken to hospital over the week starting July 29, the Fire and Disaster Management Agency said on Tuesday. /VCG Photo

The number of people sent to hospital was the second highest since the data was recorded in 2008. /VCG Photo

Hokkaido in northern Japan recorded seven deaths, the highest among the 24 prefectures that reported casualties, followed by five each in Ibaraki and Saitama. /VCG Photo

Super Typhoon Lekima is expected to hit southwestern Okinawa on Friday, while Tropical Storm Krosa is predicted to bring rain to Tokyo this weekend. Japan's Meteorological Agency has issued storm warnings for the southern Ryukyu Islands. /VCG Photo