4.0

M4.0 Earthquake 4 km SSW of Peştişani, RomaniaJuly 18, 2023

2023-07-18 20:30:55 UTC (2023-07-18) · approx. 10:30 PM UTC+2 local

Felt by 31 people across nearby locations.

MagnitudeM4.0(mb)
Time20:30 UTC10:30 PM UTC+2
Depth12.9 kmshallow crustal
Coordinates45.031°, 23.021°
Felt by31DYFI responses
Status✓ Reviewed by USGS

On July 18, 2023 at 20:30 UTC, a magnitude 4.0 shallow crustal earthquake struck 4 km SSW of Peştişani, Romania, at a depth of 12.9 km and coordinates 45.0307°, 23.0206°. This earthquake was detected by 47 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 264, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 45.03°, 23.02°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 31 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 M4.0 earthquake near 4 km SSW of Peştişani, Romania

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

Earthquake Details

Magnitude
4.0 mb
Depth
12.9 km
shallow crustal
Location
45.0307°N
23.0206°E
Felt Reports
31
DYFI responses
Community Intensity
5.8
CDI from reports

Technical Information

Event ID
us7000kgn3
Event Type
earthquake
Status
✓ Reviewed
Significance
264
Stations Used
47
Azimuthal Gap
36.0°
Min Station Distance
1.138°
RMS Residual
1.04 sec
Last Updated
2024-08-09 15:16:51 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Peştişani, Romania?

The magnitude 4.0 earthquake that struck 4 km SSW of Peştişani, Romania on July 18, 2023 at 20:30 UTC had a depth of 12.9 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 45.0307°, 23.0206°, which is 4 km SSW of Peştişani, Romania.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000kgn3). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, July 18, 2023). M4.0 Earthquake 4 km SSW of Peştişani, RomaniaJuly 18, 2023. Retrieved August 9, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000kgn3/