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Back台風25号の記録的豪雨で千葉・神奈川に土砂災害 佐倉市などで1日雨量統計史上最多
台風25号の記録的豪雨で千葉・神奈川に土砂災害 佐倉市などで1日雨量統計史上最多
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時事通信1 hour agoWeather2 min readJapanView translation

台風25号の記録的豪雨で千葉・神奈川に土砂災害 佐倉市などで1日雨量統計史上最多

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台風25号が房総半島沖を通過した21日、千葉県佐倉市で278.0ミリ、木更津市で291.0ミリなど記録的な豪雨となり、佐倉市と木更津市は1日雨量として統計史上最多を記録した。これにより両県で土砂災害が発生しが発生し、駅周辺の浸水や車の立ち往生、住民の閉じ込めなどが報告されている。

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Why It Matters

台風25号は北側に厚い雨雲を伴って北上し、関東南部に接近する前の20日から雨量が増えていたため、地盤が緩んで土砂崩れに至ったとみられる。

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千葉、神奈川両県の土砂災害が起きた地域では、大型で強い台風25号が房総半島沖を通過した21日の雨量が統計史上最多かそれに近い記録となった。気象庁によると、25号は北側に厚い雨雲を伴って北上し、関東南部に接近する前の20日から雨量が増えていたため、地盤が緩んで土砂崩れに至ったとみられる。

駅周辺、一面の水 車立ち往生、住民閉じ込めも―千葉・佐倉市

21日の雨量は千葉県佐倉市で278.0ミリ、死者が出た袖ケ浦市に隣接する木更津市で291.0ミリ、鴨川市で241.5ミリ、神奈川県三浦市で244.0ミリに上った。佐倉市と木更津市は1日の雨量として統計史上最多、鴨川市は3番目、三浦市は2番目に多い記録となり、いずれも平年の9月の1カ月間雨量を大幅に上回った。

20日の雨量は佐倉市で99.5ミリ、木更津市で109.5ミリ、鴨川市で126.0ミリ、三浦市で121.5ミリを観測していた。

同庁の細見卓也予報課長は21日の記者会見で、25号は北海道の北東海上に中心がある高気圧の影響により、房総半島に上陸せずに沖合を通過するコースになったと説明。しかし、北上する速度が予想より遅く、海面水温が高い海域を長い時間をかけて進んだため、大型で強い勢力に発達したと話した。

Open Questions

  • 土砂災害による死者・行方不明者の正確な数は何か
  • 被害を受けた地域の復旧見通しはどのようになるか
  • 今後の台風や豪雨への備えは十分か

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This article was originally published by 時事通信.

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