Reviewed by USGSIndonesia20y ago
M4.6 earthquake 271 km SSW of Singaparna, Indonesia
Monday, August 28, 2006, 12:10:19 UTC · 9.668°S, 107.308°E
A magnitude 4.6 earthquake struck 271 km SSW of Singaparna, Indonesia on Monday, August 28, 2006, 12:10:19 UTC, at a depth of 10.0 km (shallow). It is the strongest earthquake within 300 km since an M4.9 on August 28, 2006.
- Magnitude
- 4.6
- Light · mb
- Depth
- 10 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 earthquakeDashed circle: 50 km aftershock search area
In context
How big was it, and why here?
Energy released
120 tons of TNT
That is about 1/126 of the Hiroshima bomb. A magnitude 5.0 releases about 4 times more energy.
Tectonic setting
20 km
from the nearest mapped plate boundary, between the Sunda and Australian plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
10 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 50 km
USGS lists 7 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M5.9 on September 19, 2006. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 5.9294 km SSW of Singaparna, Indonesia20y ago · 26 km S of this epicenter
- 4.8236 km SSW of Singaparna, Indonesia20y ago · 35 km NE of this epicenter
- 3.8259 km S of Banjar, Indonesia20y ago · 20 km NW of this epicenter
- 4.1285 km S of Banjar, Indonesia20y ago · 25 km SW of this epicenter
- 4.7283 km SSW of Kawalu, Indonesia20y ago · 19 km SE of this epicenter
- 4.7225 km SSW of Kawalu, Indonesia20y ago · 49 km NE of this epicenter
- 5.0245 km SSW of Kawalu, Indonesia20y ago · 48 km E of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 257 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.7226 km SSW of Singaparna, IndonesiaJuly 17, 2006 · 44 km N of this epicenter
- 6.9south of Java, IndonesiaJuly 24, 1979 · 170 km S of this epicenter
- 6.5260 km SSW of Kroya, IndonesiaSeptember 7, 1974 · 116 km E of this epicenter
- 6.3136 km S of Kawalu, IndonesiaSeptember 14, 1944 · 143 km NE of this epicenter
- 6.3south of Java, IndonesiaMarch 21, 1940 · 76 km SE of this epicenter
- 6.2166 km SSW of Bambanglipuro, IndonesiaAugust 31, 1918 · 284 km E of this epicenter
- 6.2187 km S of Banjar, IndonesiaMay 12, 1957 · 87 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 8 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 1,046 recorded deaths. The most severe:
- 2006M7.7
Java
17 Jul 2006 · 44 km away
802 deaths$55 million damagetsunami
- 1943M8.1
Java: Jogyakarta
23 Jul 1943 · 296 km away · intensity VIII
213 deathsSevere damage ($5–24M)
- 1979M6.1
Java
2 Nov 1979 · 247 km away
30 deaths$16 million damage
- 2005M4.8
Java: Garut
2 Feb 2005 · 298 km away
1 deathModerate damage ($1–5M)
- 1980M5.8
Java: Tasikmalaja
16 Apr 1980 · 240 km away
Moderate damage ($1–5M)
- 1903M8.1
S Of Java
27 Feb 1903 · 235 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.