M4.7 earthquake 7 km E of Collipulli, Chile

Saturday, June 5, 2010, 23:49:04 UTC · 37.957°S, 72.348°W

A magnitude 4.7 earthquake struck 7 km E of Collipulli, Chile on Saturday, June 5, 2010, 23:49:04 UTC, at a depth of 62.0 km (shallow). USGS received 18 “Did You Feel It?” reports, with a maximum reported intensity of V (moderate). It is the strongest earthquake within 300 km since an M4.7 on June 3, 2010.

Magnitude: 4.7; Light · mb
Depth: 62 km; Shallow
Felt reports: 18; Max intensity V
Est. shaking: —; No ShakeMap
PAGER alert: None; Not issued
Tsunami: No flag; USGS feed

Outlined circle: this earthquake

In context

How big was it, and why here?

Energy released

169 tons of TNT

That is about 1/89 of the Hiroshima bomb. A magnitude 5.0 releases about 3 times more energy.

Tectonic setting

200 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

62 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

Reports sent by people to USGS, grouped by place (most reports first). Intensity uses the Modified Mercalli scale (I–X): what people felt, not the magnitude.

Place	Intensity	Reports	Distance
Angol, Araucanía, Chile	V · Moderate	2	72 km
Collipulli, Araucanía, Chile	V · Moderate	2	62 km
Traiguén, Araucanía, Chile	IV · Light	2	75 km
Temuco, Araucanía, Chile	III · Weak	2	107 km
Concepción, Bío Bío, Chile	III · Weak	2	152 km
Los Angeles, Bío Bío, Chile	III · Weak	2	82 km
Victoria, Araucanía, Chile	III · Weak	2	69 km
Villarrica, Araucanía, Chile	III · Weak	1	159 km
Laja, Bío Bío, Chile	II · Weak	1	102 km
Valdivia, Los Lagos, Chile	II · Weak	1	229 km
Talca, Maule, Chile	II · Weak	1	294 km

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 50 km

USGS has not published any M2.5+ earthquake within 50 km in the 30 days after this event.

Regional history

Past M5+ earthquakes within 300 km

USGS lists 340 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 23 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 32,974 recorded deaths. The most severe:

1939M8.3
Chillan
25 Jan 1939 · 190 km away · intensity X
30,000 deaths$920 million damagetsunami
1960M9.5
Puerto Montt, Valdivia
22 May 1960 · 95 km away · intensity XII
2,226 deaths$1.0 billion damagetsunami
2010M8.8
Maule, Concepcion, Talcahuano
27 Feb 2010 · 210 km away · intensity IX
558 deaths$30 billion damagetsunami
1751M8.5
Concepcion, Chillan, Talca, Tutuben, Curico
25 May 1751 · 140 km away · intensity XI
65 deathsSevere damage ($5–24M)tsunami
1949M7.3
Angol, Traiguen
20 Apr 1949 · 101 km away
57 deathsModerate damage ($1–5M)tsunami
1835M8.2
Concepcion
20 Feb 1835 · 139 km away · intensity XI
53 deathsExtreme damage ($25M+)tsunami

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

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