Typhoon Hinnamnor made landfall in South Korea early Tuesday, causing power outages and leaving one person missing, but there were few early reports of major damage as it headed back into the sea.

The typhoon, one of the strongest to hit the country in decades, hit the country’s southern island of Jeju overnight before making landfall near the port city of Busan, which was battered by huge waves and heavy rain, damaging streets and businesses beach damaged .

The typhoon was moving at a speed of 43 meters per second when it made landfall, authorities said.

A 25-year-old man has gone missing after falling into a rain-swollen stream in the eastern coastal city of Ulsan, the Central Headquarters for Disaster and Security Response said.

As a precaution, authorities closed more than 600 schools across the country and local airlines grounded around 250 domestic flights – but service gradually resumed on Tuesday when Hinnamnor flew to Japan.

North Korea had also been preparing for the storm, with leader Kim Jong-un overseeing a meeting in Pyongyang to assess the country’s disaster preparedness, official state media reported on Tuesday.

Kim said stepping up disaster relief efforts in Pyongyang is vital because “nothing is more valuable… than people’s lives and safety,” the Korean Central News Agency said.

According to experts, North Korea is particularly vulnerable to flooding and heavy rains due to deforestation and poor irrigation.

On Tuesday morning, the typhoon was over the Sea of ??Japan, known in Korea as the East Sea, 100 kilometers (62 miles) off Tsushima Island in Nagasaki Prefecture, southwestern Japan, according to the Japan Meteorological Agency.

More than 35,000 homes in Japan’s southwestern Kyushu region were without power, Kyushu Electricity said in a statement.

With gusts of up to 180 kilometers per hour, it was moving northeast at a speed of 45 km/h and was expected to bring heavy rains to western Japan on Tuesday.

Some of Japan’s famous bullet trains have been grounded due to strong winds and rain, and many local trains have also suspended operations, operator JR Kyushu said.

At least 120 flights taking off and landing at Kyushu Airport have been canceled, public broadcaster NHK reported.