Reviewed by USGSGreece117y ago
M6.1 earthquake 29 km ENE of Mesariá, Greece
Tuesday, April 4, 1911, 15:43:48 UTC · 36.525°N, 25.738°E
A magnitude 6.1 earthquake struck 29 km ENE of Mesariá, Greece on Tuesday, April 4, 1911, 15:43:48 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M6.1 on August 11, 1904.
- Magnitude
- 6.1
- Strong · mw
- Depth
- 15 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- VI
- Strong (ShakeMap)
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeColoured lines: estimated shaking intensity (USGS ShakeMap)
In context
How big was it, and why here?
Energy released
19 kilotons of TNT
That is about the energy of the Hiroshima bomb. It released about 40 times the energy of a magnitude 5.0.
Tectonic setting
239 km
from the nearest mapped plate boundary, between the Aegean Sea and Anatolian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
15 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.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 100 km
USGS has not published any M2.5+ earthquake within 100 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 10 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9Southern GreeceAugust 11, 1903 · 252 km W of this epicenter
- 6.14 km SE of Megálo Chorió, GreeceAugust 11, 1904 · 151 km NE of this epicenter
- 6.125 km NW of Kastrí, GreeceMay 17, 1908 · 239 km SW of this epicenter
- 6.021 km NNE of Karaburun, TurkeyJanuary 19, 1909 · 266 km N of this epicenter
- 5.832 km N of Agía Marína, GreeceFebruary 18, 1910 · 176 km SW of this epicenter
- 5.612 km S of Ierápetra, GreeceAugust 21, 1910 · 180 km S of this epicenter
- 5.59 km NNW of Amorgós, GreeceJune 23, 1908 · 44 km N of this epicenter
- 5.511 km ESE of Kímolos, GreeceJune 23, 1908 · 97 km W of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 43 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 28,874 recorded deaths. The most severe:
- 1883M7.3
Ayvalik, Izmir, Cesme
15 Oct 1883 · 202 km away · intensity X
15,000 deathsExtreme damage ($25M+)
- 1881M7.3
Khios; Turkey: Cesme
3 Apr 1881 · 197 km away · intensity XI
7,866 deathsExtreme damage ($25M+)tsunami
- 1810
Crete: Iraklion (Candia)
16 Feb 1810 · 132 km away · intensity X
3,000 deathsSevere damage ($5–24M)tsunami
- 1750
Morea,Cerigo
7 Jun 1750 · 248 km away · intensity X
2,000 deaths
- 1856
Crete; Egypt
12 Oct 1856 · 116 km away · intensity XI
600 deathsSevere damage ($5–24M)tsunami
- 1863M7.8
Rhodes, Kos
22 Apr 1863 · 202 km away · intensity XI
300 deathsSevere damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.