Recent Earthquake Near Sutton, Alaska: An Analysis of Seismic Activity

A 1.2 magnitude earthquake occurred 28 miles east of Sutton, Alaska, on November 25, 2024. The earthquake’s depth was 11.3 miles and it has not been reviewed by a seismologist. This event reflects the seismic activity within Southern Alaska, characterized by its complex tectonic setting.

On November 25, 2024, a magnitude 1.2 earthquake was recorded approximately 28 miles east of Sutton, Alaska, at 03:08:30 AKST (12:08:30 UTC). The earthquake struck at a depth of 11.3 miles (18 km) but has not undergone a thorough review by seismologists. This event is part of the complex tectonic activity that characterizes Southcentral Alaska, a region susceptible to earthquakes due to multiple tectonic features and fault lines present in the area.

The tectonic setting of Southern Alaska plays a critical role in the seismic activity witnessed in this region. Notably, the megathrust fault along the interface of the subducting Pacific Plate and the North American Plate contributes to some of the most potent earthquakes, such as the 1964 M9.2 Great Alaska Earthquake, which remains one of the most powerful ever recorded globally. Additionally, the Wadati-Benioff Zone is responsible for intermediate-depth seismic events, while crustal seismicity stems from various geological faults, which can generate strong earthquakes that threaten infrastructure and communities alike.

In summary, the recent earthquake near Sutton, Alaska, aligns with the ongoing and complex seismic activity in Southcentral Alaska, which is influenced by the subducting Pacific Plate and several other tectonic features. As awareness and understanding of this seismic environment grow, it remains crucial to monitor and study earthquakes to mitigate risks and prepare for potential ground shaking in the future.

Original Source: earthquake.alaska.edu