Typhon Shanshan

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Typhoon Shanshan was a powerful and costly tropical cyclone that moved through Japan in late August 2024. The tenth named storm and fourth typhoon of the annual typhoon season, Shanshan was first noted near the Mariana Islands on August 20, with deep convection beginning to consolidate. The following day, the Japan Meteorological Agency (JMA) upgraded it to a tropical storm and named it Shanshan. Early the next day, both the JMA and the Joint Typhoon Warning Center (JTWC) classified it as a minimal typhoon. Shanshan turned west-northwestward and stalled near Kikaijima, reaching its peak intensity with ten-minute sustained winds of 175 km/h (110 mph) and a central pressure of 935 hPa (27.61 inHg). It then peaked at Category 4-equivalent intensity on the Saffir–Simpson scale on August 27, with one-minute sustained winds of 215 km/h (130 mph). As the typhoon moved through the Ryukyu Islands, it further decayed, becoming cooler and less defined. Shanshan turned northward between two mid-level subtropical ridges and made landfall near Satsumasendai in Kagoshima Prefecture around 8 a.m. local time on August 29. It then turned eastward along the northern edge of a subtropical high and quickly crossed the Seto Inland Sea before making landfall over the northern tip of Shikoku on August 30. Shanshan's convection has slightly increased over the past six hours as its circulation moved back over open water and began progressing east-southeastward due to interaction with a mid-latitude trough. It then moved inland over Japan and dissipated on September 1. After Tropical Storm Maria and Typhoon Ampil impacted Japan, Shanshan arrived a few days later. In preparation for Shanshan, storm warnings were issued for 14 communities in the Satsuma and Ōsumi areas of Kagoshima Prefecture, and on August 28, the JMA issued special weather warnings for Kagoshima Prefecture. This was the first emergency...