2019年6月17日22时55分（北京时间），四川宜宾市长宁县发生了M6.0地震。中国地震台网中心用时10min发布正式速报结果，并开展余震监测和统计。同时，中国地震台网中心联合各有关单位，对台网数据进行分析处理，产出10类19种数据产品。产品结果显示：四川长宁M6.0地震极震区烈度达Ⅶ度，为一次逆冲型为主的事件，余震呈NWW向展布。据主震和余震分布方向，由区域地震构造图可初步推测，发震断层为NW向隐伏断层。

An M_S6.0 earthquake hit Changning,Sichuan,China at 22:55 p.m. on June 17,2019(CST). China Earthquake Networks Center releases the formal quick report within 10min and has been monitoring the aftershocks. Meanwhile,China Earthquake Networks Center,under the cooperation with some institutes,analyzing and processing the data from the monitoring networks,produces and collects 19 data products of 10 categories. These products illustrates that this earthquake,whose intensity of the meizoseismal area reaches Ⅶ degrees,is a thrust event with the aftershocks in the NWW direction and,according to the distribution direction of the main shock and the aftershocks,it can be preliminarily inferred from the regional seismotectonics that the seismogenic fault is a NW-direction hidden fault.

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监测预报司经常性项目“地震台网大震快速产出与产品汇集服务”（1950411002）资助