4.9

M4.9 Earthquake near Scotia Sea — September 23, 2026

2026-09-23 08:41:58 UTC (2026-09-23) · approx. 5:41 AM UTC-3 local

0

MagnitudeM4.9(mb)
Time08:41 UTC≈ 5:41 AM UTC-3
Depth10.0 kmshallow crustal
Coordinates-60.266°, -47.600°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 23, 2026 at 08:41 UTC, a magnitude 4.9 shallow crustal earthquake struck near Scotia Sea, at a depth of 10.0 km and coordinates -60.2661°, -47.6004°.0 This earthquake was detected by 49 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -60.27°, -47.60°

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 M4.9 earthquake near Scotia Sea

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

Earthquake Details

Magnitude
4.9 mb
Depth
10.0 km
shallow crustal
Location
-60.2661°N
-47.6004°E
Community Intensity
1.0
CDI from reports

Technical Information

Event ID
us6000tx23
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Stations Used
49
Azimuthal Gap
56.0°
Min Station Distance
8.489°
RMS Residual
1.23 sec
Last Updated
2026-09-23 09:33:20 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Scotia Sea?

The magnitude 4.9 earthquake that struck near Scotia Sea on September 23, 2026 at 08:41 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -60.2661°, -47.6004°, which is near Scotia Sea.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 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: us6000tx23). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 23, 2026). M4.9 Earthquake near Scotia Sea — September 23, 2026. Retrieved September 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tx23/