QuakeScout
Magnitude6.4

Reviewed by USGSIndonesia72y ago

M6.4 earthquake 244 km SSW of Trenggalek, Indonesia

Sunday, May 29, 1955, 15:34:09 UTC · 10.158°S, 110.956°E

A magnitude 6.4 earthquake struck 244 km SSW of Trenggalek, Indonesia on Sunday, May 29, 1955, 15:34:09 UTC, at a depth of 25.0 km (shallow). It is the strongest earthquake within 300 km since an M7.4 on July 23, 1943.

Magnitude
6.4
Strong · mw
Depth
25 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 earthquake

In context

How big was it, and why here?

Energy released

60 kilotons of TNT

That is about 4 times the Hiroshima bomb. It released about 126 times the energy of a magnitude 5.0.

Tectonic setting

36 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

25 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 11 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 · 35 km W of this epicenter
  2. 7.487 km SSW of Srandakan, IndonesiaJuly 23, 1943 · 210 km NW of this epicenter
  3. 7.1138 km SSE of Pundong, IndonesiaSeptember 10, 1926 · 116 km N of this epicenter
  4. 6.992 km S of Pundong, IndonesiaSeptember 27, 1937 · 164 km N of this epicenter
  5. 6.7169 km S of Boyolangu, IndonesiaJuly 7, 1910 · 96 km NE of this epicenter
  6. 6.668 km S of Sumberpucung, IndonesiaSeptember 11, 1916 · 219 km NE of this epicenter
  7. 6.5south of Java, IndonesiaDecember 12, 1924 · 190 km S of this epicenter
  8. 6.2166 km SSW of Bambanglipuro, IndonesiaAugust 31, 1918 · 145 km NW 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 221 recorded deaths. The most severe:

  1. 1943M8.1

    Java: Jogyakarta

    23 Jul 1943 · 128 km away · intensity VIII

    213 deathsSevere damage ($5–24M)

  2. 1867

    Java: Jogyakarta, Surakarta

    10 Jun 1867 · 269 km away · intensity IX

    5 deathsSevere damage ($5–24M)tsunami

  3. 1859

    S. Java Sea

    20 Oct 1859 · 129 km away

    2 deathsLimited damage (under $1M)tsunami

  4. 1937M7.2

    Java: Jogyakarta: Klumpit,Prambanan

    27 Sep 1937 · 118 km away · intensity IX

    1 deathSevere damage ($5–24M)

  5. 1916M7.3

    Java

    11 Sep 1916 · 258 km away

    Severe damage ($5–24M)

  6. 1840M7.0

    Java: Purworejo

    4 Jan 1840 · 245 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

Closest city pages