15 Jul 2023 | 08:02 AM UTC
South Korea: Adverse weather forecast across much of the country through at least July 17
Heavy rainfall forecast across much of South Korea through at least July 17. Evacuations, transport disruptions reported.
Event
Heavy rainfall is forecast across much of South Korea through at least July 17. Rainfall totals of up to 25 cm (9.8 inches) are forecast in parts of South Chungcheong, North Chungcheong, North Jeolla, North Gyeongsang, and North Jeonnam provinces, and up to 4 cm (2 inches) are expected across Seoul metropolitan area July 15-16. Further showers are forecast in many areas through July 17. As of July 15, the Korea Meteorological Administration (KMA) has issued heavy rain warnings across the country. Officials could update and extend the coverage of the relevant weather alerts over the coming days.
The severe weather has killed at least seven people, with several others injured or missing. As of the morning of July 15, authorities have evacuated at least 1,567 people nationwide. A train derailed in Cheongju, North Chungcheong Province, late July 14 due to a landslide, with reports of transport disruptions in other affected areas. Power outages have also affected thousands of households.
Hazardous Conditions
Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed or a lack of stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where the soil has become saturated by heavy rainfall.
Authorities could issue additional evacuation orders for flood-prone communities over the coming days. Disruptions to electricity and telecommunications services are likely where strong winds and flying debris impact utility networks. Strong winds are likely to result in hazardous driving conditions and impact overland travel. Localized business disruptions may occur; some businesses might not operate at full capacity because of damage to facilities and some employees' inability to reach work sites.
Transport
Floodwaters and debris flows will likely render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. The disruptive weather may cause delays and cancellations at airports across the affected region. Flooding could block regional rail lines; freight cancellations are possible in areas subject to heavy rainfall and track blockages.
Disruptions triggered by inclement weather and resultant hazards, such as flooding, could persist well after weather conditions have improved; it could take days before any floodwaters recede and/or officials clear debris. If there is severe damage to infrastructure, repair or reconstruction efforts may result in residual disruptions.
Advice
Monitor local media for weather updates and related advisories. Confirm all transport reservations and business appointments before travel. Make allowances for localized travel delays and potential supply chain disruptions where strong winds and heavy rainfall have been forecast. Do not drive on flooded roads. Charge battery-powered devices in the case of prolonged electricity outages.
