Reviewed by USGSIndonesia111y ago
M6.6 earthquake 68 km S of Sumberpucung, Indonesia
Monday, September 11, 1916, 06:30:37 UTC · 8.769°S, 112.366°E
A magnitude 6.6 earthquake struck 68 km S of Sumberpucung, Indonesia on Monday, September 11, 1916, 06:30:37 UTC, at a depth of 65.0 km (shallow). It is the strongest earthquake within 300 km since an M6.7 on July 7, 1910.
- Magnitude
- 6.6
- Strong · mw
- Depth
- 65 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
128 kilotons of TNT
That is about 9 times the Hiroshima bomb. It released about 269 times the energy of a magnitude 5.0.
Tectonic setting
209 km
from the nearest mapped plate boundary, between the Sunda and Australian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
65 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 1 M5.0+ earthquake 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 9 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 11,460 recorded deaths. The most severe:
- 1815M7.3
Bali
22 Nov 1815 · 288 km away · intensity IX
11,453 deathstsunami
- 1867
Java: Jogyakarta, Surakarta
10 Jun 1867 · 242 km away · intensity IX
5 deathsSevere damage ($5–24M)tsunami
- 1859
S. Java Sea
20 Oct 1859 · 152 km away
2 deathsLimited damage (under $1M)tsunami
- 1916M7.3
Java
11 Sep 1916 · 74 km away
Severe damage ($5–24M)
- 1840M7.0
Java: Purworejo
4 Jan 1840 · 222 km away · intensity IX
Severe damage ($5–24M)tsunami
- 1865
Java: Ambarawa
16 Jul 1865 · 287 km away
Moderate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.