Reviewed by USGSPeru13y ago
M4.4 earthquake 16 km WSW of Cotaruse, Peru
Monday, October 7, 2013, 11:49:33 UTC · 14.492°S, 73.333°W
A magnitude 4.4 earthquake struck 16 km WSW of Cotaruse, Peru on Monday, October 7, 2013, 11:49:33 UTC, at a depth of 63.4 km (shallow).
- Magnitude
- 4.4
- Light · mb
- Depth
- 63 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- 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
60 tons of TNT
That is about 1/251 of the Hiroshima bomb. A magnitude 5.0 releases about 8 times more energy.
Tectonic setting
134 km
from the nearest mapped plate boundary, between the Altiplano and South American plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
63 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 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 419 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.46 km SSW of Atico, PeruJune 23, 2001 · 200 km S of this epicenter
- 8.121 km NNE of Minas de Marcona, PeruAugust 24, 1942 · 192 km W of this epicenter
- 7.737 km SSW of Atico, PeruAugust 6, 1913 · 231 km S of this epicenter
- 7.760 km SW of Changuillo, PeruNovember 12, 1996 · 258 km W of this epicenter
- 7.235 km N of El Cardo, PeruOctober 11, 1922 · 211 km S of this epicenter
- 7.212 km NNE of Cono Norte, PeruFebruary 26, 1914 · 270 km SE of this epicenter
- 7.121 km SSE of Nazca, PeruJanuary 15, 1960 · 175 km W of this epicenter
- 7.116 km WSW of Atiquipa, PeruSeptember 25, 2013 · 196 km SW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 47 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 1,575 recorded deaths. The most severe:
- 1784M8.0
Arequipa,Camana,Moquegua,Tambo
13 May 1784 · 265 km away · intensity X
383 deathsSevere damage ($5–24M)tsunami
- 1821
Camana, Ocona, Caraveli
10 Jul 1821 · 184 km away · intensity VIII
162 deathsSevere damage ($5–24M)
- 1707M5.8
Cuzco
17 Sep 1707 · 148 km away · intensity X
160 deaths
- 1913M6.3
Amyaraes, Abancay, Casaya, Soraya
4 Nov 1913 · 57 km away · intensity X
150 deathsSevere damage ($5–24M)
- 1950M6.0
Cusco
21 May 1950 · 181 km away · intensity VII
129 deathsSevere damage ($5–24M)
- 2001M8.4
Arequipa, Moquegua, Tacna, Ayacucho
23 Jun 2001 · 200 km away · intensity VIII
103 deaths$200 million damagetsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.