4.0

M4.0 Earthquake near Kermadec Islands, New ZealandJuly 28, 2024

2024-07-28 14:40:04 UTC (2024-07-28) · approx. 2:40 AM UTC-12 local

MagnitudeM4.0(mb)
Time14:40 UTC2:40 AM UTC-12
Depth10.0 kmshallow crustal
Coordinates-30.119°, -177.589°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 28, 2024 at 14:40 UTC, a magnitude 4.0 shallow crustal earthquake struck near Kermadec Islands, New Zealand, at a depth of 10.0 km and coordinates -30.1195°, -177.5889°.

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 -30.12°, -177.59°

Earthquake Details

Magnitude
4.0 mb
Depth
10.0 km
shallow crustal
Location
-30.1195°N
-177.5889°E

Technical Information

Event ID
us6000njvr
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
15
Azimuthal Gap
198.0°
Min Station Distance
0.902°
RMS Residual
0.94 sec
Last Updated
2024-10-08 21:49:15 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Kermadec Islands, New Zealand?

The magnitude 4.0 earthquake that struck near Kermadec Islands, New Zealand on July 28, 2024 at 14:40 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

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.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000njvr). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, July 28, 2024). M4.0 Earthquake near Kermadec Islands, New ZealandJuly 28, 2024. Retrieved October 8, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000njvr/