4.5

M4.5 Earthquake 31 km NE of Falam, MyanmarDecember 16, 2021

2021-12-16 20:13:20 UTC (2021-12-16) · approx. 2:13 AM UTC+6 local

0

MagnitudeM4.5(mb)
Time20:13 UTC2:13 AM UTC+6
Depth66.0 kmshallow crustal
Coordinates23.135°, 93.877°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 16, 2021 at 20:13 UTC, a magnitude 4.5 shallow crustal earthquake struck 31 km NE of Falam, Myanmar, at a depth of 66.0 km and coordinates 23.1346°, 93.8775°.0

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.

Map showing earthquake epicenter at 23.13°, 93.88°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from submitted citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.5 earthquake near 31 km NE of Falam, Myanmar

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.5 mb
Depth
66.0 km
shallow crustal
Location
23.1346°N
93.8775°E
Community Intensity
1.0
CDI from reports

Technical Information

Event ID
us6000gcwh
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Azimuthal Gap
77.0°
Min Station Distance
2.110°
RMS Residual
0.58 sec
Last Updated
2022-02-24 21:02:03 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Falam, Myanmar?

The magnitude 4.5 earthquake that struck 31 km NE of Falam, Myanmar on December 16, 2021 at 20:13 UTC had a depth of 66.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 23.1346°, 93.8775°, which is 31 km NE of Falam, Myanmar.

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.

Authoritative source: USGS event page (event ID: us6000gcwh). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, December 16, 2021). M4.5 Earthquake 31 km NE of Falam, MyanmarDecember 16, 2021. Retrieved February 24, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000gcwh/