4.5

M4.5 Earthquake 54 km ENE of Sainte-Marie, Martinique — September 20, 2026

2026-09-20 02:44:21 UTC (1 hour ago) · approx. 10:44 PM UTC-4 local

Felt by 2 people across nearby locations.

MagnitudeM4.5(mwr)
Time02:44 UTC≈ 10:44 PM UTC-4
Depth46.4 kmshallow crustal
Coordinates15.040°, -60.558°
Felt by2DYFI responses
Status✓ Reviewed by USGS

On September 20, 2026 at 02:44 UTC, a magnitude 4.5 shallow crustal earthquake struck 54 km ENE of Sainte-Marie, Martinique, at a depth of 46.4 km and coordinates 15.0395°, -60.5578°. This earthquake was detected by 61 seismic stations with good 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 15.04°, -60.56°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 2 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 54 km ENE of Sainte-Marie, Martinique

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

Earthquake Details

Magnitude
4.5 mwr
Depth
46.4 km
shallow crustal
Location
15.0395°N
-60.5578°E
Felt Reports
2
DYFI responses
Community Intensity
2.2
CDI from reports

Technical Information

Event ID
us7000tinf
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Stations Used
61
Azimuthal Gap
108.0°
Min Station Distance
1.143°
RMS Residual
1.24 sec
Last Updated
2026-09-20 03:40:05 UTC

Nearby Earthquakes (Last 7 Days)

4.1
16 km NNW of Basse-Pointe, Martinique
6 days ago · 159.1 km deep

Common Questions

How strong was the magnitude 4.5 earthquake near Sainte-Marie, Martinique?

The magnitude 4.5 earthquake that struck 54 km ENE of Sainte-Marie, Martinique on September 20, 2026 at 02:44 UTC had a depth of 46.4 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 15.0395°, -60.5578°, which is 54 km ENE of Sainte-Marie, Martinique.

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.

Actions

View on USGSDid You Feel It?

Authoritative source: USGS event page (event ID: us7000tinf). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 20, 2026). M4.5 Earthquake 54 km ENE of Sainte-Marie, Martinique — September 20, 2026. Retrieved September 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tinf/