M5.5 Earthquake 288 km ENE of Lospalos, Timor Leste — October 26, 2023
2023-10-26 05:44:18 UTC (2023-10-26) · approx. 2:44 PM UTC+9 local
Felt by 9 people across nearby locations.
On October 26, 2023 at 05:44 UTC, a magnitude 5.5 intermediate depth earthquake struck 288 km ENE of Lospalos, Timor Leste, at a depth of 154.0 km and coordinates -7.1498°, 129.2243°. The earthquake was reported felt by 9 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 3.7 (light). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 124 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 468, placing it among routine seismic activity. The nearest populated place is Tiakur (population 0).
Physical scale: An earthquake of magnitude 5.5 releases seismic energy equivalent to roughly 3 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 3.8 km — a useful intuition for the size of the slip patch on the fault.
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 9 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 | 93,019 |
| MMI 4 | light | 13,014 |
Earthquake Details
129.2243°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.5 earthquake near Lospalos, Timor Leste?
The magnitude 5.5 earthquake that struck 288 km ENE of Lospalos, Timor Leste on October 26, 2023 at 05:44 UTC had a depth of 154.0 km. It was felt by 9 people with maximum shaking intensity of MMI 3.7 (light). For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -7.1498°, 129.2243°, which is 288 km ENE of Lospalos, Timor Leste. The nearest populated place is Tiakur (population 0).
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.5 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000l6fd). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 26, 2023). M5.5 Earthquake 288 km ENE of Lospalos, Timor Leste — October 26, 2023. Retrieved January 4, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000l6fd/