Reviewed by USGSIndonesia121y ago
M6.3 earthquake 94 km SE of Sofifi, Indonesia
Monday, October 29, 1906, 01:15:53 UTC · 0.185°N, 128.202°E
A magnitude 6.3 earthquake struck 94 km SE of Sofifi, Indonesia on Monday, October 29, 1906, 01:15:53 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M7.0 on May 1, 1904.
- Magnitude
- 6.3
- 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
51 kilotons of TNT
That is about 3 times the Hiroshima bomb. It released about 106 times the energy of a magnitude 5.0.
Tectonic setting
147 km
from the nearest mapped plate boundary, between the Philippine Sea and Sunda 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 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 34 recorded deaths. The most severe:
- 1855
Maluku: Ternate Island
14 Jul 1855 · 121 km away · intensity IX
34 deathsModerate damage ($1–5M)
- 1858M7.3
N. Moluccas Islands
13 Dec 1858 · 261 km away
Severe damage ($5–24M)tsunami
- 1889M8.0
N. Moluccas Islands
6 Sep 1889 · 235 km away
Moderate damage ($1–5M)tsunami
- 1840
Maluku: Ternate Island
14 Feb 1840 · 119 km away
Moderate damage ($1–5M)tsunami
- 1846M7.3
N. Moluccas Islands
25 Jan 1846 · 277 km away
tsunami
- 1859M7.0
N. Moluccas Islands
28 Jun 1859 · 210 km away
tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.