5.0

M5.0 Earthquake near Pacific-Antarctic Ridge — November 30, 2025

2025-11-30 12:18:13 UTC (2025-11-30) · approx. 2:18 AM UTC-10 local

Aftershock of the M5.1 mainshock.

MagnitudeM5.0(mb)
Time12:18 UTC≈ 2:18 AM UTC-10
Depth10.0 kmshallow crustal
Coordinates-56.076°, -143.880°
Felt byNo felt reports
Status✓ Reviewed by USGS

On November 30, 2025 at 12:18 UTC, a magnitude 5.0 shallow crustal earthquake struck near Pacific-Antarctic Ridge, at a depth of 10.0 km and coordinates -56.0757°, -143.8795°. This earthquake was detected by 36 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 385, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 5.0 releases seismic energy equivalent to roughly 477 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.7 km — a useful intuition for the size of the slip patch on the fault.

This earthquake is part of an ongoing aftershock sequence following the magnitude 5.1 mainshock that occurred 19 days ago near Pacific-Antarctic Ridge. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.

Map showing earthquake epicenter at -56.08°, -143.88°

Earthquake Details

Magnitude
5.0 mb
Depth
10.0 km
shallow crustal
Location
-56.0757°N
-143.8795°E

Technical Information

Event ID
us7000reqv
Event Type
earthquake
Status
✓ Reviewed
Significance
385
Stations Used
36
Azimuthal Gap
88.0°
Min Station Distance
24.175°
RMS Residual
0.71 sec
Last Updated
2026-02-25 16:18:39 UTC

Common Questions

How strong was the magnitude 5.0 earthquake near Pacific-Antarctic Ridge?

The magnitude 5.0 earthquake that struck near Pacific-Antarctic Ridge on November 30, 2025 at 12:18 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.

Where did the earthquake occur?

The earthquake epicenter was located at -56.0757°, -143.8795°, which is near Pacific-Antarctic Ridge.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks and gradually diminish over time.

Is this the same earthquake as the M5.1 one earlier?

No. This magnitude 5.0 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier near Pacific-Antarctic Ridge. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.

Actions

View on USGSDid You Feel It?

Authoritative source: USGS event page (event ID: us7000reqv). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, November 30, 2025). M5.0 Earthquake near Pacific-Antarctic Ridge — November 30, 2025. Retrieved February 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000reqv/