South Korea: Storm Haishen upgraded to super typhoon on September 4

Event

The US Joint Typhoon Warning Center (JTWC) reported on Friday, September 4, that storm Haishen had strengthened into a super typhoon in the Philippines Sea, 600 km (370 miles) southeast of Okinawa (Japan). Maximum sustained winds of 250 kph (155 mph) have been reported, making Haishen equivalent to a category 4 hurricane. Forecasters have stated that they believe the storm to have peaked and it is expected to gradually lose intensity as it moves towards the Korean peninsula. Haishen will be the third typhoon to hit the Korean peninsula in a two-week period, with Typhoons Bavi and Maysak making landfall as category 1 and category 2 storms respectively. Haishen is expected to make landfall near Busan late on Sunday, September 6, or early on Monday, September 7.

Strong winds, heavy rainfall, and associated flooding and landslides are expected in South Korea over the coming days. Disruption to transportation, business, and utilities is likely.

Context

Tropical storms can form in the Pacific Ocean at any time of year, although most typhoons occur during a peak season between June and November. In general, storm systems make landfall along South Korea's southern and southeastern coasts, making these areas, which are home to many industrial and port facilities, particularly at risk of experiencing the full brunt of storms or typhoons. The country has comprehensive and reliable weather tracking and emergency management systems, although powerful storm systems can overwhelm preparedness and recovery programs.

Advice

Individuals in areas forecast to be affected by the storm system are advised to monitor local weather reports, confirm flight reservations, adhere to instructions issued by local authorities, anticipate adverse weather and power and transportation disruptions, and remember that running water can be dangerous. Never drive through flooded streets; floodwater may also contain wastewater and chemical products.