Reviewed by USGSIndonesia92y ago
M6.1 earthquake 95 km SW of Pangkalan Brandan, Indonesia
Tuesday, November 12, 1935, 21:28:14 UTC · 3.515°N, 97.580°E
A magnitude 6.1 earthquake struck 95 km SW of Pangkalan Brandan, Indonesia on Tuesday, November 12, 1935, 21:28:14 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M7.0 on August 3, 1935.
- Magnitude
- 6.1
- Strong · mw
- Depth
- 15 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
22 kilotons of TNT
That is about the energy of the Hiroshima bomb. It released about 46 times the energy of a magnitude 5.0.
Tectonic setting
104 km
from the nearest mapped plate boundary, between the Sunda and Burma 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 18 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.2The 1907 Sumatra Earthquake and TsunamiJanuary 4, 1907 · 246 km W of this epicenter
- 7.040 km NE of Meulaboh, IndonesiaAugust 3, 1935 · 162 km NW of this epicenter
- 6.928 km NNE of Sinabang, IndonesiaNovember 4, 1917 · 149 km SW of this epicenter
- 6.860 km W of Sinabang, IndonesiaNovember 2, 1908 · 221 km SW of this epicenter
- 6.768 km SE of Singkil, IndonesiaApril 1, 1921 · 202 km S of this epicenter
- 6.327 km E of Meulaboh, IndonesiaSeptember 11, 1912 · 151 km NW of this epicenter
- 6.2126 km SW of Singkil, IndonesiaApril 3, 1915 · 245 km S of this epicenter
- 6.159 km W of Kabanjahe, IndonesiaJuly 27, 1916 · 57 km SE of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 10 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 2,188 recorded deaths. The most severe:
- 1907M8.2
Nw Sumatra: Gunungsitoli, Barus
4 Jan 1907 · 246 km away
2,188 deathsSevere damage ($5–24M)tsunami
- 1843M7.3
Sw. Sumatra
5 Jan 1843 · 229 km away · intensity XI
Severe damage ($5–24M)tsunami
- 1837M7.3
Banda Atjeh
29 Sep 1837 · 282 km away
Moderate damage ($1–5M)tsunami
- 1892
Sumatra: Padangsidimpuan, Lake Toba
17 May 1892 · 241 km away · intensity VI
Moderate damage ($1–5M)tsunami
- 1861M7.0
Sw. Sumatra
26 Apr 1861 · 280 km away
tsunami
- 1852M6.8
Sumatra: Sibolga
11 Nov 1852 · 229 km away
tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.