2004年7月18日の福井県における豪雨災害の特徴

概要

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A heavy rainfall caused by a baiu-front (stationary front) occurred in Northern Fukui prefecture on July 18, 2004. Meteorological Agency called this event "Fukui heavy rainfall on July 2004". In Miyama town, Fukui prefecture, an hourly precipitation of 87 mm was recorded on July 18 and a 24-hour precipitation amounted to 283 mm.The highest 1-hour precipitation records in the last 25 years were revised at 2 observatories, and the highest 24-hour precipitation records were revised at 3 observatories based on the data of the Japan Meteorological Agency. In this heavy rainfall, 5 persons were killed, 126 houses destroyed, and about 13,900 houses inundated. It is one of the violent inundation damage during past 10 years in Japan. Nine levee breaches happened in class-A rivers and many sediment disasters occurred in the Asuwa river basin. Most of the inundation damage happened in the center of Fukui city and almost sediment disasters occurred Miyama town, Imadate town and Ikeda town. In mountain area, some hamlets were isolated by the sediment disasters for several days. Finally, this event has become the worst heavy rainfall disaster in Fukui prefecture since 1971.
2004-11-30