 | |
| Meteorological history | |
|---|---|
| Formed | September 11, 1948 |
| Dissipated | September 17, 1948 |
| Unknown-strength storm | |
| 10-minute sustained (JMA) | |
| Lowest pressure | 925 hPa (mbar); 27.32 inHg |
| Category 4-equivalent typhoon | |
| 1-minute sustained (SSHWS/JTWC) | |
| Highest winds | 220 km/h (140 mph) |
| Overall effects | |
| Fatalities | 512 confirmed |
| Missing | 326 |
| Damage | Unknown |
| Areas affected | Northern Mariana Islands, Japan |
| IBTrACS | |
Part of the 1948 Pacific typhoon season | |
Typhoon Ione was a catastrophic and deadly tropical cyclone that left over 512 confirmed deaths and another 326 to be missing as it affected Japan, with the majority of the fatalities coming from the city of Ichinoseki in Iwate Prefecture.[1] It also left a significant trail of damage on the country, just after Typhoon Kathleen devastated the area.[2][3] The fourteenth named storm and the ninth typhoon of the 1948 Pacific typhoon season, Ione was first seen in weather maps as a tropical storm near the Mariana Islands on September 11. It moved to the northwest, passing through the island country, before strengthening to a typhoon on September 13. It rapidly organized to a Category 4 typhoon and reached its peak intensity on the next day before slowly weakening as it started to approach the Japanese archipelago, while curving to the northeast. It then made landfall on September 16 between the present cities of Tateyama and Kisarazu in Chiba Prefecture as a minimal typhoon. It then passed through the southern coast of Hokkaido, before gradually degraded to a tropical storm as it emerged in the Pacific Ocean on the next day. It then became extratropical, shortly after.
- ^ "1948年 アイオン台風・（昭和23年） 9月15日～17日～自然災害の記録～NHK東日本大震災アーカイブス". NHK災害アーカイブス. Retrieved 2022-10-04.
- ^ "アイオン台風とは". コトバンク (in Japanese). Retrieved 2022-10-04.
- ^ "アイオン台風（1948年9月16日）". Yahoo!天気・災害 (in Japanese). Retrieved 2022-10-04.