4.5

M4.5 Earthquake 2 km E of Polkowice, PolandJuly 6, 2023

2023-07-06 19:54:23 UTC (2023-07-06) · approx. 8:54 PM UTC+1 local

Felt by 1 person across nearby locations.

MagnitudeM4.5(mb)
Time19:54 UTC8:54 PM UTC+1
Depth1.9 kmshallow crustal
Coordinates51.501°, 16.111°
Felt by1DYFI response
Status✓ Reviewed by USGS

On July 6, 2023 at 19:54 UTC, a magnitude 4.5 shallow crustal earthquake struck 2 km E of Polkowice, Poland, at a depth of 1.9 km and coordinates 51.5008°, 16.1114°. This earthquake was detected by 124 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.

Map showing earthquake epicenter at 51.50°, 16.11°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response 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 2 km E of Polkowice, Poland

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

Earthquake Details

Magnitude
4.5 mb
Depth
1.9 km
shallow crustal
Location
51.5008°N
16.1114°E
Felt Reports
1
DYFI responses
Community Intensity
4.3
CDI from reports

Technical Information

Event ID
us6000kqkl
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Stations Used
124
Azimuthal Gap
35.0°
Min Station Distance
1.160°
RMS Residual
0.75 sec
Last Updated
2023-09-09 21:54:53 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Polkowice, Poland?

The magnitude 4.5 earthquake that struck 2 km E of Polkowice, Poland on July 6, 2023 at 19:54 UTC had a depth of 1.9 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 51.5008°, 16.1114°, which is 2 km E of Polkowice, Poland.

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: us6000kqkl). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, July 6, 2023). M4.5 Earthquake 2 km E of Polkowice, PolandJuly 6, 2023. Retrieved September 9, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kqkl/