东南暴雨逼近：迈阿密本周末面临二级突发洪水威胁，恰逢大潮汛期
位于佛罗里达州的 Miami 本周末面临暴雨与突发洪水威胁。据 Fox Weather 10月21日报道，一股移动缓慢的天气系统本周将给美国东南部带来连日降雨，多轮强降雨预计从周四开始持续至周末。南佛罗里达预计降雨2至3英寸，Miami 至周末处于二级（共四级）突发洪水威胁之下。预测市场 Kalshi 的数据显示，Miami 到月底累计降雨超过4英寸的概率为81%，超过5英寸的概率为60%。10月中下旬正值大潮（king tide）高峰期，升高的水位将加剧沿海洪水风险。
同日，美国国家飓风中心（NHC）宣布，副热带风暴 Josephine 于10月21日下午形成，中心位于马萨诸塞州 Nantucket 以南约265英里处，以每小时6英里的速度向北移动，最大持续风速每小时65英里，预计周四转向东北、远离美国本土。国家气象局 Melbourne 办公室表示，Josephine 掀起的大浪使佛罗里达东海岸持续出现危险的离岸流与恶劣海况，不宜下水。
Southeast Braces for Soaking Rain: Miami Faces Level 2 Flash Flood Threat This Weekend at Peak King Tide
Miami, Florida faces heavy rain and a flash flood threat this weekend. According to Fox Weather on October 21, a slow-moving weather system will bring days of rain to the U.S. Southeast this week, with repeated rounds of heavy rain expected to begin Thursday and continue through the weekend. South Florida is expected to receive 2 to 3 inches of rain, and Miami is under a Level 2 out of 4 flash flood threat through the weekend. Prediction market Kalshi puts the chance that Miami receives more than 4 inches of rain by the end of the month at 81%, and the chance of more than 5 inches at 60%. Mid to late October is the peak of king tide season, and the raised water levels will worsen coastal flooding.
The same day, the National Hurricane Center (NHC) announced that Subtropical Storm Josephine formed on the afternoon of October 21, centered about 265 miles south of Nantucket, Massachusetts, moving north at 6 mph with maximum sustained winds of 65 mph, and forecast to turn northeast on Thursday and move away from the United States. The National Weather Service office in Melbourne said large swells from Josephine continue to bring dangerous rip currents and hazardous boating conditions along Florida's east coast, and entering the surf is not advised.
来源：GSM·美国（原文链接）
图片来源：图：洪水街景，图片来源：Getty Images（经 Fox Weather）
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