4.3

M4.3 Earthquake 41 km SE of Blenheim, New ZealandJuly 15, 2022

2022-07-15 21:29:26 UTC (2022-07-15) · approx. 9:29 AM UTC+12 local

MagnitudeM4.3(mwr)
Time21:29 UTC9:29 AM UTC+12
Depth10.0 kmshallow crustal
Coordinates-41.760°, 174.327°
Felt by2DYFI responses
Status✓ Reviewed by USGS

On July 15, 2022 at 21:29 UTC, a magnitude 4.3 shallow crustal earthquake struck 41 km SE of Blenheim, New Zealand, at a depth of 10.0 km and coordinates -41.7596°, 174.3265°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -41.76°, 174.33°

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 M4.3 earthquake near 41 km SE of Blenheim, New Zealand

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

Earthquake Details

Magnitude
4.3 mwr
Depth
10.0 km
shallow crustal
Location
-41.7596°N
174.3265°E
Felt Reports
2
DYFI responses
Community Intensity
4.1
CDI from reports

Technical Information

Event ID
us6000i2vv
Event Type
earthquake
Status
✓ Reviewed
Significance
285
Stations Used
20
Azimuthal Gap
102.0°
Min Station Distance
0.532°
RMS Residual
0.49 sec
Last Updated
2022-09-24 21:25:31 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Blenheim, New Zealand?

The magnitude 4.3 earthquake that struck 41 km SE of Blenheim, New Zealand on July 15, 2022 at 21:29 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 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000i2vv). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, July 15, 2022). M4.3 Earthquake 41 km SE of Blenheim, New ZealandJuly 15, 2022. Retrieved September 24, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000i2vv/