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多地降雨量突破历史极值,成都本轮强降雨天气何时结束?成都市气象台解答

来源:887.scxinxi.com 更新时间:2026年03月06日

  7月3日下午,成都市气象台发布了今年首个暴雨红色预警信号,红星新闻记者从成都市气象台了解到,也是历史上最早的暴雨红色预警信号,同时也是在中心城区“5+2”区域第一次发布暴雨红色预警信号。

  对于此次降水,成都市气象台进行答记者问。

  一、这场暴雨有哪些特点?

  此次过程具有突发性强、累计雨量大、小时雨强大、极端性突出等特点。本轮降雨全市最大日降雨量为353.8毫米(青羊区人民公园),突破中心城区“5+2”区域日降雨量极值(267.4毫米,2010年 6月3日);最大小时降雨量为102.2毫米(人民公园,3日18时),居中心城区小时降雨量历史第三位。彭州白鹿镇和龙门山镇日降雨量突破本站历史极值,崇州、都江堰和邛崃12个站点日降雨量接近历史极值。

  二、此次暴雨天气过程成因

  从气候统计平均值来看,成都市平均降雨量自西向东是逐渐递减的,但是就每次过程而言则具有很大的差异性,历史上在中心城区也出现过极端强降雨天气,此次过程极端性更强。主要原因在于成都处于副热带高压边缘,大气层结呈高能高湿强不稳定状态,容易出现局地热雷雨。中低层的强偏南风源源不断地向成都输送水汽和不稳定能量,再叠加成都中心城区的城市热岛效应,对流云团在有利的环境条件下自南向北不断生成发展,形成明显的“列车效应”,以上原因共同造成了此次中心城区的极端强降雨天气。

  三、这轮降水天气过程还要持续多久?

  本轮强降雨过程将于5日白天明显减弱,但局地阵雨或雷雨天气仍多发。预计今天晚上全市仍有强降雨天气,将普降中到大雨。主要落区仍将维持在西部,西部地区有大雨到暴雨,西南部局部地方有大暴雨,其间伴有4-6级偏北风,东部部分地方可达7级或以上。

  四、后期天气趋势如何?

  7月成都还将有3次降雨天气过程,预计出现时段为16-18日、21-23日、27-29日。

  五、温馨提示

  1.此次过程暴雨后续主要落区仍集中在成都市西部,累计雨量大、小时雨量强,彭州、都江堰、崇州、大邑、邛崃等地质灾害易发区(市)县降雨与6月下旬强降雨落区高度重合,累计降雨量大,山区土体处于饱水状态,综合考虑持续降雨的叠加效应和地灾的滞后性,发生滑坡、崩塌等地质灾害的风险较高,需加强灾害隐患点排查,做好防范应对,公众尽量避免山区游玩。

  2.受持续降水影响,岷江流域出现涨水,有超过保证水位的气象风险,上下游需加强联防,做好雨情、水情监测。公众尽量避免到危险河段游玩。

  红星新闻记者 戴佳佳

  编辑 成序

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