Reviewed by USGSChile100y ago
M6.7 earthquake 25 km SE of Monte Patria, Chile
Monday, November 14, 1927, 07:19:30 UTC · 30.825°S, 70.742°W
A magnitude 6.7 earthquake struck 25 km SE of Monte Patria, Chile on Monday, November 14, 1927, 07:19:30 UTC, at a depth of 50.0 km (shallow). It is the strongest earthquake within 300 km since an M6.8 on January 29, 1924.
- Magnitude
- 6.7
- Strong · mw
- Depth
- 50 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- VII
- Very 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
181 kilotons of TNT
That is about 12 times the Hiroshima bomb. It released about 380 times the energy of a magnitude 5.0.
Tectonic setting
179 km
from the nearest mapped plate boundary, between the Nazca and South American plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
50 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 20 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.594 km ENE of Vallenar, ChileNovember 11, 1922 · 294 km N of this epicenter
- 8.2The 1906 Valparaiso, Chile EarthquakeAugust 17, 1906 · 186 km S of this epicenter
- 7.086 km NW of La Serena, ChileMarch 19, 1904 · 199 km NW of this epicenter
- 7.0118 km WNW of Vallenar, ChileNovember 7, 1922 · 297 km NW of this epicenter
- 6.9103 km NNW of Coquimbo, ChileMay 20, 1918 · 216 km NW of this epicenter
- 6.972 km WNW of Calingasta, ArgentinaJuly 27, 1917 · 67 km E of this epicenter
- 6.957 km W of Ovalle, ChileFebruary 15, 1917 · 106 km W of this epicenter
- 6.843 km N of Vallenar, ChileJanuary 29, 1924 · 294 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 32 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 19,182 recorded deaths. The most severe:
- 1861
Mendoza, San Luiz
20 Mar 1861 · 286 km away · intensity IX
14,000 deathsExtreme damage ($25M+)tsunami
- 1906M8.2
South Central
17 Aug 1906 · 269 km away · intensity XI
4,000 deaths$100 million damagetsunami
- 1922M8.5
Atacama
11 Nov 1922 · 294 km away · intensity XI
700 deathsSevere damage ($5–24M)tsunami
- 1920M6.7
Mendoza
17 Dec 1920 · 252 km away · intensity VIII
400 deathsSevere damage ($5–24M)
- 1822M8.5
Valparaiso, Quillota, Concon, Aconcagua
20 Nov 1822 · 269 km away · intensity XI
72 deathsExtreme damage ($25M+)tsunami
- 1730M9.1
Valparaiso
8 Jul 1730 · 200 km away · intensity XI
5 deathsSevere damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.