成都高新减灾研究所发第四份声明：首报预警震级偏差大表示道歉，但强调并非误报

2026年8月24日8时26分，四川宜宾长宁发生4.7级地震，成都高新减灾研究所大陆地震预警网首报震级为7.7级1。这是该所自2011年9月开始服务社会15年来偏差最大的一次1。2026年8月26日，成都高新减灾研究所发布第四份声明，就首报预警震级偏差过大再次致歉，同时强调该预警并非误报1。

针对四川省地震局称其冒用“中国地震预警网”名义的争议，声明回应称该名称是中国地震局与减灾所于2020年签署合作备忘录共建的成果1。四川省地震局已于2026年7月22日终止向减灾所提供中国地震预警网紧急地震信息服务第三方授权1。此外，该所目前仍有约1亿用户通过手机、APP、大喇叭等方式接收其地震预警信息，并呼吁地震局预警信息接入其亿级存量用户1。

On August 24, 2026, at 8:26 a.m., a magnitude 4.7 earthquake struck Changning in Yibin, Sichuan Province 1. The Mainland Earthquake Early Warning Network operated by the Chengdu High-Tech Disaster Reduction Institute initially reported the earthquake's magnitude as 7.7 1. On August 26, the institute issued its fourth statement to apologize once again for the substantial deviation in the initially reported warning magnitude 1. Despite the significant discrepancy, the institute emphasized that the warning was not a false alarm 1. The institute noted that this incident marked the largest magnitude deviation in the 15 years since it began providing public services in September 2011 1.

The statement also addressed the controversy surrounding the alleged unauthorized use of the "China Earthquake Early Warning Network" name 1. The Sichuan Earthquake Agency previously accused the institute of misusing the network's name and terminated its third-party authorization for the institute to provide emergency earthquake information services under the network on July 22, 2026 1. Clarifying the situation, the institute stated that the "China Earthquake Early Warning Network" was jointly established through a memorandum of understanding signed between the China Earthquake Administration and the institute in 2020 1. Additionally, the institute pointed out that it currently still serves approximately 100 million users who receive its earthquake early warning information through mobile phones, apps, and public loudspeakers 1.