QuakeScout
Magnitude3.9

Reviewed by USGSIndonesia19y ago

M3.9 earthquake 31 km ENE of Rengasdengklok, Indonesia

Thursday, August 16, 2007, 16:15:41 UTC · 6.078°S, 107.568°E

A magnitude 3.9 earthquake struck 31 km ENE of Rengasdengklok, Indonesia on Thursday, August 16, 2007, 16:15:41 UTC, at a depth of 378.7 km (deep).

Magnitude
3.9
Minor · mb
Depth
379 km
Deep
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

11 tons of TNT

That is about 1/1,410 of the Hiroshima bomb. A magnitude 5.0 releases about 45 times more energy.

Tectonic setting

383 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: deep

379 km

Deep earthquakes (over 300 km) happen deep inside subducting plates. They rarely cause damage, but can be felt faintly over very large distances.

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 1 M2.5+ earthquake within 50 km in the following 30 days; the largest was M4.1 on August 26, 2007. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

M3M41h6h1d3d7d14d30dMainshock M3.9
Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.
  1. 4.135 km N of Rengasdengklok, Indonesia19y ago · 42 km NW of this epicenter

Regional history

Past M5+ earthquakes within 300 km

USGS lists 286 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.535 km NNE of Rengasdengklok, IndonesiaAugust 8, 2007 · 29 km NW of this epicenter
  2. 7.0164 km N of Pamanukan, IndonesiaDecember 15, 1963 · 150 km N of this epicenter
  3. 7.030 km WNW of Labuan, IndonesiaApril 1, 1943 · 223 km W of this epicenter
  4. 6.9183 km N of Rengasdengklok, IndonesiaApril 16, 1957 · 182 km N of this epicenter
  5. 6.850 km WSW of Labuan, IndonesiaJuly 3, 1954 · 242 km W of this epicenter
  6. 6.829 km SW of Labuan, IndonesiaOctober 25, 2000 · 220 km W of this epicenter
  7. 6.679 km WSW of Labuan, IndonesiaAugust 13, 1913 · 271 km W of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 33 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 832 recorded deaths. The most severe:

  1. 1924

    Java: Wonosobo

    2 Dec 1924 · 291 km away · intensity IX

    727 deathsSevere damage ($5–24M)

  2. 1924

    Java

    12 Nov 1924 · 281 km away

    60 deaths

  3. 1979M6.1

    Java

    2 Nov 1979 · 191 km away

    30 deaths$16 million damage

  4. 1875

    W Java: Kuningan

    25 Oct 1875 · 122 km away · intensity VIII

    7 deathsSevere damage ($5–24M)

  5. 1999M6.5

    Pandeglang, W Jawa, Se Sumatera

    21 Dec 1999 · 238 km away

    5 deaths$4 million damage

  6. 1971M5.2

    Java: Buaran,Bantar Kawsun,Jipang

    16 Jun 1971 · 210 km away

    1 deathSevere damage ($5–24M)

NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.

Nearby trackers

Closest city pages