M4.8 Earthquake 18 km SW of Mongar, Bhutan — September 19, 2026
2026-09-19 10:31:17 UTC (1 hour ago) · approx. 4:31 PM UTC+6 local
Felt by 9 people across nearby locations.
On September 19, 2026 at 10:31 UTC, a magnitude 4.8 shallow crustal earthquake struck 18 km SW of Mongar, Bhutan, at a depth of 10.0 km and coordinates 27.1636°, 91.1016°. This earthquake was detected by 58 seismic stations with good location accuracy and was assigned a USGS significance rating of 358, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 9 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
91.1016°E
Technical Information
Common Questions
How strong was the magnitude 4.8 earthquake near Mongar, Bhutan?
The magnitude 4.8 earthquake that struck 18 km SW of Mongar, Bhutan on September 19, 2026 at 10:31 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 27.1636°, 91.1016°, which is 18 km SW of Mongar, Bhutan.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000tiiz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 19, 2026). M4.8 Earthquake 18 km SW of Mongar, Bhutan — September 19, 2026. Retrieved September 19, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tiiz/