M6.4 Earthquake 155 km ESE of Kokopo, Papua New Guinea — October 13, 2022
2022-10-13 22:20:20 UTC (2022-10-13) · approx. 8:20 AM UTC+10 local
Felt by 11 people across nearby locations. Maximum shaking intensity MMI 5.2 (strong).
On October 13, 2022 at 22:20 UTC, a magnitude 6.4 intermediate depth earthquake struck 155 km ESE of Kokopo, Papua New Guinea, at a depth of 72.0 km and coordinates -4.8120°, 153.5906°. The earthquake was reported felt by 11 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 5.2 (strong). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 129 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 637, making it a moderate-impact event. The nearest populated place is Buka (population 0).
Physical scale: An earthquake of magnitude 6.4 releases seismic energy equivalent to roughly 60 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 16 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Papua New Guinea, a region characterized by the collision and subduction of the Pacific, Australian, and Solomon Sea plates. View all earthquakes in Papua New Guinea.
Learn more: Magnitude scale · Aftershock sequences
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 11 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 3,729 |
| MMI 4 | light | 503,288 |
| MMI 5 | moderate | 26,951 |
Earthquake Details
153.5906°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 6.4 earthquake near Kokopo, Papua New Guinea?
The magnitude 6.4 earthquake that struck 155 km ESE of Kokopo, Papua New Guinea on October 13, 2022 at 22:20 UTC had a depth of 72.0 km. It was felt by 11 people with maximum shaking intensity of MMI 5.2 (strong). For context, this was a strong earthquake capable of causing significant damage.
Where did the earthquake occur?
The earthquake epicenter was located at -4.8120°, 153.5906°, which is 155 km ESE of Kokopo, Papua New Guinea. The nearest populated place is Buka (population 0). View all earthquakes in Papua New Guinea.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 6.4 earthquakes can continue for weeks to months and gradually diminish over time.
Has Papua New Guinea had earthquakes this big before?
The largest recorded earthquake in Papua New Guinea was the M8.0 New Britain earthquake of July 18, 1971. Today's magnitude 6.4 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000itgv). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, October 13, 2022). M6.4 Earthquake 155 km ESE of Kokopo, Papua New Guinea — October 13, 2022. Retrieved December 17, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000itgv/