25 Aug 2024 | 04:48 AM UTC
Japan: Typhoon Shanshan tracking northwestward across Philippine Sea as of early Aug. 25 /update 1
Typhoon Shanshan tracks northwestward over Philippine Sea early Aug. 25. Landfall over Kochi Prefecture, Japan, likely early Aug. 28.
Typhoon Shanshan is tracking northwestward across the Philippine Sea early Aug. 25. As of 12:00 JST, the system's center of circulation was approximately 243 km (151 miles) west of Iwo Jima.
Forecast models indicate that the weather system will strengthen further as it tracks generally northwestward away from Iwo Jima through early Aug. 27 before turning sharply to track north-northeastward and make landfall over Kochi Prefecture early Aug. 28. After landfall, the system is likely to weaken but remain at typhoon strength as it tracks north-northeastward across the Shikoku region and the border of Chugoku and Kansai regions before exiting into the Sea of Japan the afternoon of Aug. 28. Shanshan is likely to weaken into a tropical storm as it tracks north-northeastward across the Sea of Japan, making a close approach to Hokkaido Prefecture late Aug. 29-early Aug. 30. Some uncertainty remains in the track and intensity forecast, and changes could occur in the coming days.
As of early Aug. 25, the Japan Meteorological Agency (JMA) has issued a bulletin warning that the typhoon will track northward, resulting in severe weather from western to eastern Japan around Aug. 27 and across northern Japan around Aug. 28. Swells and heavy seas are likely across western Japan; waves of up to 8 meters (26 feet) are forecast over the Shikoku region and 7 meters (23 feet) over the Kinki region Aug. 27. Authorities will likely issue new warnings or update existing advisories throughout the system's progression in the coming days.
Sustained heavy rainfall could trigger flooding in low-lying areas and those with easily overwhelmed drainage systems. If weather conditions prove hazardous, localized evacuations, flash flooding, and landslides are possible.
The inclement weather could trigger localized business, transport, and utility disruptions and render some bridges or roadways impassable. Flight disruptions at regional airports and temporary closures of ports are also possible. Stagnant pools of water during and after flooding increase insect- and waterborne diseases, such as dengue fever, cholera, and malaria. Exposure to raw sewage and other hazardous materials mixed with floodwaters poses a serious health threat.
Activate contingency plans in areas where officials forecast tropical storm conditions. Heed any evacuation orders that may be issued. Use extreme caution in low-lying coastal areas and near streams, creeks, and other waterways due to the potential for severe flooding and storm surge. Stockpile water, batteries, and other essentials in advance. Charge battery-powered devices when electricity is available; restrict the use of cellular phones to emergencies only. Power down mobile devices when not in use. Keep important documents and necessary medications in waterproof containers. Observe strict food and water precautions, as municipalities could issue boil-water advisories following flooding events. Take precautions against insect- and waterborne diseases in the coming weeks.
Plan accordingly for protracted commercial, transport, and logistics disruptions in areas in the path of the storm, especially if vital infrastructure is damaged. Seek updated information on road conditions before driving or routing shipments through areas where flooding has occurred. Confirm flights before checking out of hotels or driving to the airport; clearing passenger backlogs may take several days in some locations.
