M4.5 Earthquake in the Pagan region, Northern Mariana Islands — April 22, 2026
2026-04-22 22:04:05 UTC (2026-04-22) · approx. 8:04 AM UTC+10 local
On April 22, 2026 at 22:04 UTC, a magnitude 4.5 deep-focus earthquake struck in the Pagan region, Northern Mariana Islands, at a depth of 341.9 km and coordinates 18.0674°, 145.3427°. This earthquake was detected by 86 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
145.3427°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake in the Pagan region, Northern Mariana Islands?
The magnitude 4.5 earthquake that struck in the Pagan region, Northern Mariana Islands on April 22, 2026 at 22:04 UTC had a depth of 341.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 18.0674°, 145.3427°, which is in the Pagan region, Northern Mariana Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us6000ss74). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 22, 2026). M4.5 Earthquake in the Pagan region, Northern Mariana Islands — April 22, 2026. Retrieved July 3, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000ss74/