Magnitude 4.6 earthquake strikes 68 km S of Hihifo, Tonga
A magnitude 4.6 earthquake struck 68 km south of Hihifo, Tonga, on Monday, July 27, 2026, at 01:05:37 GMT, at a depth of 80.466 km. The United States Geological Survey (USGS) assigned this event a significance score of 326 out of a possible 1000. No felt reports have been submitted to the USGS, which is a common occurrence in regions with fewer users of the reporting system.
The significance score of 326 indicates that while the earthquake was notable, it is unlikely to have caused widespread or severe impacts. Higher significance scores are typically associated with earthquakes that have a greater potential for significant societal disruption, such as widespread shaking, damage, or casualties. With a score of 326, this event falls into a category where such widespread impacts are generally not expected.