1999年6月29日に福岡県と広島県において発生した豪雨の特徴

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A depression passed through the northern part of Kyushu district and the western part of Chugoku district on June 29, 1999 along the Baiu front. Mudflows and slope failures occurred at many places due to short time heavy rainfall in Fukuoka and Hiroshima Prefectures. The maximum one-hour precipitation at Fukuoka and Kure meteorological observatories were 79.5 mm (8:43) and 73.5 (16:50), which were the 2nd record since 1939's and 1920's, respectively. We collected the precipitation data from meteorological observation stations in western parts of Fukuoka and Hiroshima Prefectures. In Fukuoka Prefecture, at 9 o'clock, strong precipitation over 80 mm/h was observed in a region of about 5km radii. The region extended from Hakata Ward of Fukuoka City to Hisayama Town and the north part of Onojo City. At 10 o'clock, heavy precipitation of 60-79 mm/h was observed in a region extends from Hisayama Town to Dazaifu City which north-south dimension was about 20 km. In Hiroshima Prefecture, during 9 to 19 o'clock, the total precipitation at Heyama was 227 mm, which was the maximum valus of collected data. At 15 o'clock, the precipitation over 60 mm/h was observed at aregion extending from the western part of Saeki Ward to Asa-kita Ward. At 16 o'clock, heavy rainfall area moved to the center of Asa-minami and Asa-kita Wards. In the same time, the precipitation over 60 mm/h was observed from the eastern of Eta Island over Kure City.
日本自然災害学会の論文
2002-02-28

1999年6月29日に福岡県と広島県において発生した豪雨の特徴

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