Reviewed by USGSIndonesia20y ago
M4.4 earthquake 287 km SSW of Kawalu, Indonesia
Saturday, August 12, 2006, 04:38:34 UTC · 9.849°S, 107.387°E
A magnitude 4.4 earthquake struck 287 km SSW of Kawalu, Indonesia on Saturday, August 12, 2006, 04:38:34 UTC, at a depth of 10.0 km (shallow).
- Magnitude
- 4.4
- 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
60 tons of TNT
That is about 1/251 of the Hiroshima bomb. A magnitude 5.0 releases about 8 times more energy.
Tectonic setting
4 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 10 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M5.0 on August 12, 2006. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 3.8259 km S of Banjar, Indonesia20y ago · 42 km NW of this epicenter
- 4.1285 km S of Banjar, Indonesia20y ago · 33 km W of this epicenter
- 4.7283 km SSW of Kawalu, Indonesia20y ago · 4 km N of this epicenter
- 4.6271 km SSW of Singaparna, Indonesia20y ago · 22 km NW of this epicenter
- 4.5275 km S of Banjar, Indonesia20y ago · 28 km NW of this epicenter
- 4.5269 km SSW of Singaparna, Indonesia20y ago · 30 km NW of this epicenter
- 4.8278 km S of Banjar, Indonesia20y ago · 33 km NW of this epicenter
- 4.4283 km S of Kawalu, Indonesia20y ago · 36 km E of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 247 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 · 63 km N of this epicenter
- 6.9south of Java, IndonesiaJuly 24, 1979 · 149 km S of this epicenter
- 6.5260 km SSW of Kroya, IndonesiaSeptember 7, 1974 · 106 km E of this epicenter
- 6.3136 km S of Kawalu, IndonesiaSeptember 14, 1944 · 156 km NE of this epicenter
- 6.3south of Java, IndonesiaMarch 21, 1940 · 54 km SE of this epicenter
- 6.2166 km SSW of Bambanglipuro, IndonesiaAugust 31, 1918 · 278 km E of this epicenter
- 6.2187 km S of Banjar, IndonesiaMay 12, 1957 · 107 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 7 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 1,045 recorded deaths. The most severe:
- 2006M7.7
Java
17 Jul 2006 · 63 km away
802 deaths$55 million damagetsunami
- 1943M8.1
Java: Jogyakarta
23 Jul 1943 · 289 km away · intensity VIII
213 deathsSevere damage ($5–24M)
- 1979M6.1
Java
2 Nov 1979 · 262 km away
30 deaths$16 million damage
- 1980M5.8
Java: Tasikmalaja
16 Apr 1980 · 250 km away
Moderate damage ($1–5M)
- 1903M8.1
S Of Java
27 Feb 1903 · 256 km away
- 1904
S. Java
7 Sep 1904 · 298 km away
tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.