M5.6 Earthquake 100 km SE of Mil’kovo, Russia — April 18, 2023
2023-04-18 02:40:52 UTC (2023-04-18) · approx. 1:40 PM UTC+11 local
Felt by 1 person across nearby locations. Maximum shaking intensity MMI 4.2 (moderate).
On April 18, 2023 at 02:40 UTC, a magnitude 5.6 intermediate depth earthquake struck 100 km SE of Mil’kovo, Russia, at a depth of 108.0 km and coordinates 54.1650°, 159.8676°. The earthquake was reported felt by 1 personacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 4.2 (moderate). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 159 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 483, placing it among routine seismic activity. The nearest populated place is Yelizovo (population 40,692).
Physical scale: An earthquake of magnitude 5.6 releases seismic energy equivalent to roughly 4 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 4.4 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Russia, a region characterized by the Kuril-Kamchatka subduction zone on the northwestern Pacific Ring of Fire. The nearest mapped fault system is the Kuril-Kamchatka Trench. View all earthquakes in Russia.
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 1 citizen response 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 | 40,050 |
| MMI 4 | light | 239,117 |
Earthquake Details
159.8676°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.6 earthquake near Mil’kovo, Russia?
The magnitude 5.6 earthquake that struck 100 km SE of Mil’kovo, Russia on April 18, 2023 at 02:40 UTC had a depth of 108.0 km. It was felt by 1 person with maximum shaking intensity of MMI 4.2 (moderate). For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 54.1650°, 159.8676°, which is 100 km SE of Mil’kovo, Russia. The nearest populated place is Yelizovo (population 40,692). View all earthquakes in Russia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.6 earthquakes can continue for days to weeks and gradually diminish over time.
Has Russia had earthquakes this big before?
The largest recorded earthquake in Russia was the M9.0 Kamchatka earthquake of November 4, 1952. Today's magnitude 5.6 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000k57x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 18, 2023). M5.6 Earthquake 100 km SE of Mil’kovo, Russia — April 18, 2023. Retrieved July 3, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k57x/