QuakeScout
Magnitude7.1

Reviewed by USGSIndonesia101y ago

M7.1 earthquake 138 km SSE of Pundong, Indonesia

Friday, September 10, 1926, 10:34:28 UTC · 9.169°S, 110.630°E

A magnitude 7.1 earthquake struck 138 km SSE of Pundong, Indonesia on Friday, September 10, 1926, 10:34:28 UTC, at a depth of 35.0 km (shallow). It is the strongest earthquake within 300 km since an M7.6 on September 11, 1921.

Magnitude
7.1
Major · mw
Depth
35 km
Shallow
Felt reports
0
Did You Feel It?
Est. shaking
V
Moderate (ShakeMap)
PAGER alert
None
Not issued
Tsunami
No flag
USGS feed

Outlined circle: this earthquakeDashed circle: 200 km aftershock search areaColoured lines: estimated shaking intensity (USGS ShakeMap)

In context

How big was it, and why here?

Energy released

674 kilotons of TNT

That is about 45 times the Hiroshima bomb. It released about 1,413 times the energy of a magnitude 5.0.

Tectonic setting

145 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

35 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 200 km

USGS lists 1 M2.5+ earthquake within 200 km in the following 30 days; the largest was M6.0 on September 11, 1926. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

M3M4M5M6M71h6h1d3d7d14d30dMainshock M7.1
Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.
  1. 6.0186 km S of Pundong, Indonesia101y ago · 60 km SW of this epicenter

Regional history

Past M5+ earthquakes within 300 km

USGS lists 5 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.6233 km S of Pundong, IndonesiaSeptember 11, 1921 · 98 km S of this epicenter
  2. 6.7169 km S of Boyolangu, IndonesiaJuly 7, 1910 · 123 km SE of this epicenter
  3. 6.668 km S of Sumberpucung, IndonesiaSeptember 11, 1916 · 196 km E of this epicenter
  4. 6.5south of Java, IndonesiaDecember 12, 1924 · 289 km S of this epicenter
  5. 6.2166 km SSW of Bambanglipuro, IndonesiaAugust 31, 1918 · 86 km W of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 13 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 794 recorded deaths. The most severe:

  1. 1924

    Java: Wonosobo

    2 Dec 1924 · 223 km away · intensity IX

    727 deathsSevere damage ($5–24M)

  2. 1924

    Java

    12 Nov 1924 · 227 km away

    60 deaths

  3. 1867

    Java: Jogyakarta, Surakarta

    10 Jun 1867 · 154 km away · intensity IX

    5 deathsSevere damage ($5–24M)tsunami

  4. 1859

    S. Java Sea

    20 Oct 1859 · 45 km away

    2 deathsLimited damage (under $1M)tsunami

  5. 1916M7.3

    Java

    11 Sep 1916 · 261 km away

    Severe damage ($5–24M)

  6. 1840M7.0

    Java: Purworejo

    4 Jan 1840 · 131 km away · intensity IX

    Severe damage ($5–24M)tsunami

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

Nearby trackers

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