Reviewed by USGSPeru97y ago
M6.2 earthquake 9 km S of San Juan, Peru
Wednesday, June 25, 1930, 10:17:46 UTC · 15.452°S, 75.145°W
A magnitude 6.2 earthquake struck 9 km S of San Juan, Peru on Wednesday, June 25, 1930, 10:17:46 UTC, at a depth of 30.0 km (shallow). It is the strongest earthquake within 300 km since an M7.2 on October 11, 1922.
- Magnitude
- 6.2
- Strong · mw
- Depth
- 30 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
33 kilotons of TNT
That is about 2 times the Hiroshima bomb. It released about 70 times the energy of a magnitude 5.0.
Tectonic setting
46 km
from the nearest mapped plate boundary, between the Altiplano and South American plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
30 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 9 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.737 km SSW of Atico, PeruAugust 6, 1913 · 193 km SE of this epicenter
- 7.235 km N of El Cardo, PeruOctober 11, 1922 · 277 km E of this epicenter
- 6.913 km SSW of San Juan, PeruOctober 3, 1916 · 121 km NE of this epicenter
- 6.7165 km SSW of Atiquipa, PeruJuly 28, 1913 · 191 km S of this epicenter
- 6.7103 km SSW of Atico, PeruSeptember 13, 1919 · 214 km SE of this epicenter
- 6.512 km S of Chiara, PeruJanuary 9, 1921 · 252 km NE of this epicenter
- 6.512 km WNW of Cotaruse, PeruFebruary 28, 1920 · 230 km NE of this epicenter
- 5.9108 km W of Paracas, PeruJanuary 18, 1928 · 277 km NW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 17 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 378 recorded deaths. The most severe:
- 1821
Camana, Ocona, Caraveli
10 Jul 1821 · 244 km away · intensity VIII
162 deathsSevere damage ($5–24M)
- 1913M6.3
Amyaraes, Abancay, Casaya, Soraya
4 Nov 1913 · 279 km away · intensity X
150 deathsSevere damage ($5–24M)
- 1914
Pararca,Paysa,Colta,Oyala
2 Dec 1914 · 210 km away · intensity X
34 deathsSevere damage ($5–24M)
- 1813
Ica
30 Mar 1813 · 153 km away · intensity VII
32 deathsModerate damage ($1–5M)
- 1913M7.9
Caraveli, Chuquibamba, Ocona, Atico
6 Aug 1913 · 211 km away · intensity X
Severe damage ($5–24M)tsunami
- 1739
Santa Catalina
24 Mar 1739 · 258 km away · intensity VII
Severe damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.