M5.2 Earthquake in the Balleny Islands region — May 22, 2026
2026-05-22 08:04:22 UTC (2026-05-22) · approx. 6:04 PM UTC+10 local
Aftershock of the M5.5 mainshock.
On May 22, 2026 at 08:04 UTC, a magnitude 5.2 shallow crustal earthquake struck in the Balleny Islands region, at a depth of 10.0 km and coordinates -61.5634°, 154.0625°. This earthquake was detected by 24 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 416, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.2 releases seismic energy equivalent to roughly 951 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.3 km — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.5 mainshock that occurred 17 days ago in the Balleny Islands region. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
154.0625°E
Technical Information
Common Questions
How strong was the magnitude 5.2 earthquake in the Balleny Islands region?
The magnitude 5.2 earthquake that struck in the Balleny Islands region on May 22, 2026 at 08:04 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -61.5634°, 154.0625°, which is in the Balleny Islands region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.2 earthquakes can continue for days to weeks and gradually diminish over time.
Is this the same earthquake as the M5.5 one earlier?
No. This magnitude 5.2 earthquake is an aftershock of the larger magnitude 5.5 mainshock that occurred earlier in the Balleny Islands region. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Actions
Authoritative source: USGS event page (event ID: us6000szfp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 22, 2026). M5.2 Earthquake in the Balleny Islands region — May 22, 2026. Retrieved July 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000szfp/