日本千叶县13日遭遇创纪录强降雨，造成重大人员伤亡。据报道，至少4人死亡[2]，另有1人心肺功能停止[1]。千叶市中央区24小时降雨量达367毫米，创观测史最高纪录[1]，超过往年整个8月降水量的3倍[1]。日本气象厅13日晚对千叶县多个地区发布了最高级别的5级大雨特别警报[1]，气象厅官员称这场暴雨"正在形成前所未有水平"[2]。
灾害影响范围广泛。成田机场超过6000名旅客被困过夜[2]，近25000户家庭停电[2]。千叶县知事表示，"即使按日本的历史天气标准，这也是极其罕见的情况"[2]。这场强降雨发生在日本最繁忙的假期周期间[2]，对交通运输造成严重影响。
Heavy rainfall struck Japan's Chiba Prefecture on August 13, resulting in significant casualties and infrastructure damage. According to reports, 6 people died in the disaster, with one additional person in cardiac and pulmonary arrest [1] and others reported missing [2]. The unprecedented precipitation has disrupted transportation, power systems, and left thousands stranded.
The rainfall intensity shattered historical records for the region. Chiba City's central ward recorded 367 millimeters of precipitation within 24 hours, marking the highest measurement in the area's observation history [1] and exceeding three times the typical rainfall for an entire August [1]. Another measurement reported rainfall exceeding 36 centimeters in a 24-hour period [2]. The Japan Meteorological Agency issued its highest-level 5-tier heavy rain warning for multiple areas in Chiba Prefecture [1], with officials describing the event as forming "an unprecedented level of heavy rainfall" [2].
The disaster has caused substantial secondary impacts across the region. More than 6,000 passengers were stranded overnight at Narita Airport [2], while approximately 25,000 households experienced power outages [2]. Chiba Prefecture's governor characterized the event as "extremely rare even by Japan's historical weather standards" [2], emphasizing the exceptional nature of this meteorological event during one of Japan's busiest holiday periods [2].