QuakeScout
Magnitude2.9

Reported by EMSC5d ago

M2.9 earthquake in Croatia

Monday, September 21, 2026, 22:41:31 UTC · 45.152°N, 14.787°E

A magnitude 2.9 earthquake struck in Croatia on Monday, September 21, 2026, 22:41:31 UTC, at a depth of 2.2 km (shallow).

Magnitude
2.9
Minor · ml
Depth
2 km
Shallow
Reported by
EMSC
Agency EMSC
Nearest tracker
103 km
from Ljubljana

Outlined circle: this earthquakeDashed circle: 50 km aftershock search area

In context

How big was it, and why here?

Energy released

338 kg of TNT

That is about 1/44,601 of the Hiroshima bomb. A magnitude 5.0 releases about 1,413 times more energy.

Tectonic setting

706 km

from the nearest mapped plate boundary, between the Eurasian and African plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.

Depth: shallow

2 km

Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.

After the main event

Aftershocks within 50 km

USGS and EMSC list 6 M2.5+ earthquakes within 50 km since this event; the largest was M2.8 on September 23, 2026. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

M31h6h1d3dMainshock M2.9
Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.
  1. 2.1Croatia2d ago · 3 km NE of this epicenter
  2. 2.2Croatia2d ago · 3 km SE of this epicenter
  3. 2.1Croatia3d ago · 2 km NE of this epicenter
  4. 2.0Croatia4d ago · 6 km SW of this epicenter
  5. 2.0Croatia4d ago · 3 km N of this epicenter
  6. 2.8Croatia4d ago · 3 km W of this epicenter

Regional history

Past M5+ earthquakes within 300 km

USGS lists 160 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 6.65 km ESE of Preci, ItalyOctober 30, 2016 · 288 km SW of this epicenter
  2. 6.53 km SW of Prato, ItalyMay 6, 1976 · 178 km NW of this epicenter
  3. 6.42 km WSW of Petrinja, CroatiaDecember 29, 2020 · 119 km E of this epicenter
  4. 6.21 km NNW of Vicchio, ItalyJune 29, 1919 · 296 km SW of this epicenter
  5. 6.24 km ENE of Baška Voda, CroatiaJanuary 11, 1962 · 266 km SE of this epicenter
  6. 6.25 km WNW of Accumoli, ItalyAugust 24, 2016 · 299 km SW of this epicenter
  7. 6.22 km SE of Grabovci, CroatiaDecember 29, 1942 · 269 km SE of this epicenter
  8. 6.2CroatiaJanuary 7, 1962 · 277 km SE of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 100 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 42,411 recorded deaths. The most severe:

  1. 1703

    Central Apennino, Norcia, L'Aquila, Perugia

    14 Jan 1703 · 296 km away · intensity XI

    40,000 deathsExtreme damage ($25M+)

  2. 1976M6.5

    Ne, Balkans Nw: Slovenia: Nw

    6 May 1976 · 178 km away · intensity X

    978 deaths$3.6 billion damage

  3. 1789

    Citta Di Castello,Sansepolcro

    30 Sep 1789 · 276 km away · intensity X

    500 deathsSevere damage ($5–24M)

  4. 2016M6.2

    Accumoli, Arquata, Amatrice

    24 Aug 2016 · 299 km away · intensity IX

    299 deaths$5.0 billion damage

  5. 1730

    Norcia

    12 May 1730 · 298 km away · intensity X

    200 deathsSevere damage ($5–24M)

  6. 1768

    Santa Sofia

    19 Oct 1768 · 255 km away · intensity X

    120 deathsSevere damage ($5–24M)

NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.

Nearby trackers

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