4.3

M4.3 Earthquake 12 km NNW of Lop?tari, Romania — May 25, 2021

2021-05-25 21:30:37 UTC (2021-05-25) · approx. 11:30 PM UTC+2 local

Felt by 13 people across nearby locations.

MagnitudeM4.3(mb)
Time21:30 UTC≈ 11:30 PM UTC+2
Depth128.0 kmintermediate depth
Coordinates45.587°, 26.523°
Felt by13DYFI responses
Status✓ Reviewed by USGS

On May 25, 2021 at 21:30 UTC, a magnitude 4.3 intermediate depth earthquake struck 12 km NNW of Lop?tari, Romania, at a depth of 128.0 km and coordinates 45.5870°, 26.5231°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 45.59°, 26.52°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 13 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 M4.3 earthquake near 12 km NNW of Lop?tari, Romania

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

Earthquake Details

Magnitude
4.3 mb
Depth
128.0 km
intermediate depth
Location
45.5870°N
26.5231°E
Felt Reports
13
DYFI responses
Community Intensity
4.1
CDI from reports

Technical Information

Event ID
us7000e68e
Event Type
earthquake
Status
✓ Reviewed
Significance
290
Azimuthal Gap
18.0°
Min Station Distance
0.417°
RMS Residual
1.21 sec
Last Updated
2022-05-25 04:47:07 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Lop?tari, Romania?

The magnitude 4.3 earthquake that struck 12 km NNW of Lop?tari, Romania on May 25, 2021 at 21:30 UTC had a depth of 128.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 45.5870°, 26.5231°, which is 12 km NNW of Lop?tari, Romania.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000e68e). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, May 25, 2021). M4.3 Earthquake 12 km NNW of Lop?tari, Romania — May 25, 2021. Retrieved May 25, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000e68e/