QuakeScout
Magnitude5.8

Reviewed by USGSIndonesia94y ago

M5.8 earthquake 99 km SSE of Pelabuhanratu, Indonesia

Thursday, July 13, 1933, 14:23:25 UTC · 7.857°S, 106.792°E

A magnitude 5.8 earthquake struck 99 km SSE of Pelabuhanratu, Indonesia on Thursday, July 13, 1933, 14:23:25 UTC, at a depth of 35.0 km (shallow). It is the strongest earthquake within 300 km since an M5.8 on January 20, 1931.

Magnitude
5.8
Moderate · mw
Depth
35 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

7 kilotons of TNT

That is about 1/2 of the Hiroshima bomb. It released about 15 times the energy of a magnitude 5.0.

Tectonic setting

169 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 75 km

USGS has not published any M2.5+ earthquake within 75 km in the 30 days after this event.

Regional history

Past M5+ earthquakes within 300 km

USGS lists 12 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 6.679 km WSW of Labuan, IndonesiaAugust 13, 1913 · 214 km NW of this epicenter
  2. 6.585 km SW of Labuan, IndonesiaMay 12, 1923 · 199 km NW of this epicenter
  3. 6.3157 km WSW of Pelabuhanratu, IndonesiaJanuary 18, 1931 · 160 km W of this epicenter
  4. 6.123 km SSE of Bandar Lampung, IndonesiaJune 19, 1930 · 295 km NW of this epicenter
  5. 6.1139 km WSW of Labuan, IndonesiaJune 19, 1930 · 276 km NW of this epicenter
  6. 6.083 km SSW of Banjar, IndonesiaApril 24, 1919 · 26 km E of this epicenter
  7. 5.974 km WSW of Labuan, IndonesiaMarch 18, 1924 · 223 km NW of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 15 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 7 recorded deaths. The most severe:

  1. 1875

    W Java: Kuningan

    25 Oct 1875 · 197 km away · intensity VIII

    7 deathsSevere damage ($5–24M)

  2. 1834

    Java: Bogor, Cinajur

    10 Oct 1834 · 131 km away · intensity IX

    Severe damage ($5–24M)

  3. 1926

    Java: Prupuk,Margarsari,Dubuktengah

    13 Dec 1926 · 258 km away · intensity IX

    Severe damage ($5–24M)

  4. 1847

    Java: Cheribon

    16 Nov 1847 · 235 km away

    Moderate damage ($1–5M)

  5. 1863

    Java: Banyumas

    31 Jul 1863 · 279 km away

    Moderate damage ($1–5M)

  6. 1900

    Java: Sukabumi

    14 Jan 1900 · 115 km away · intensity VII

    Moderate damage ($1–5M)

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

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