Dhaka, March 27 -- Firefighters in South Korea are struggling to control massive wildfires that have claimed 27 lives, forced over 37,000 people to evacuate, and destroyed more than 300 structures. Helicopters continued dropping water over burning forests on Thursday as strong winds and dry conditions fueled the country's worst wildfires on record.

Since last Friday, multiple blazes have been raging across southeastern South Korea, prompting the government to deploy thousands of personnel, along with helicopters and specialized equipment. However, gusty winds have hindered containment efforts.

While rain is forecast for later Thursday, Korea Forest Service chief Lim Sang-seop warned that the expected precipitation-less than 5 millimeter...