Reviewed by USGSIndonesia109y ago
M6.3 earthquake 85 km SSW of Kotabumi, Indonesia
Wednesday, April 2, 1919, 00:34:59 UTC · 5.493°S, 104.489°E
A magnitude 6.3 earthquake struck 85 km SSW of Kotabumi, Indonesia on Wednesday, April 2, 1919, 00:34:59 UTC, at a depth of 20.0 km (shallow). It is the strongest earthquake within 300 km since an M6.3 on February 13, 1918.
- Magnitude
- 6.3
- Strong · mw
- Depth
- 20 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
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
273 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
20 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 6 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 6.769 km SSE of Bengkulu, IndonesiaApril 15, 1916 · 246 km NW of this epicenter
- 6.679 km WSW of Labuan, IndonesiaAugust 13, 1913 · 161 km SE of this epicenter
- 6.4200 km SW of Bandar Lampung, IndonesiaOctober 4, 1907 · 150 km S of this epicenter
- 6.3174 km SSW of Pagar Alam, IndonesiaFebruary 13, 1918 · 176 km W of this epicenter
- 6.3159 km SSW of Pagar Alam, IndonesiaJuly 14, 1914 · 212 km W of this epicenter
- 6.2264 km WSW of Labuan, IndonesiaDecember 5, 1907 · 236 km S of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 5 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1770M7.0
Sumatra:
1770 · 281 km away
Severe damage ($5–24M)tsunami
- 1852M6.5
Java: Djakarta; Sumatra: Telukbetung
9 Jan 1852 · 158 km away · intensity VIII
Limited damage (under $1M)tsunami
- 1757M7.5
Jakarta
24 Aug 1757 · 283 km away
tsunami
- 1722
Java: Djakarta (Jakarta)
Oct 1722 · 270 km away · intensity IX
tsunami
- 1863
Java
16 Mar 1863 · 254 km away
tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.