QuakeScout
Magnitude6.1

Reviewed by USGSIndonesia59y ago

M6.1 earthquake 191 km N of Gili Air, Indonesia

Tuesday, March 26, 1968, 00:42:00 UTC · 6.626°S, 116.161°E

A magnitude 6.1 earthquake struck 191 km N of Gili Air, Indonesia on Tuesday, March 26, 1968, 00:42:00 UTC, at a depth of 554.4 km (deep). It is the strongest earthquake within 300 km since an M7.1 on August 11, 1937.

Magnitude
6.1
Strong · mw
Depth
554 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 earthquake

In context

How big was it, and why here?

Energy released

21 kilotons of TNT

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

Tectonic setting

445 km

from the nearest mapped plate boundary, between the Banda Sea and Sunda plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.

Depth: deep

554 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 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. 7.1205 km NNE of Gili Air, IndonesiaAugust 11, 1937 · 36 km E of this epicenter
  2. 7.0133 km NNE of Pototano, IndonesiaJuly 5, 1911 · 209 km E of this epicenter
  3. 6.57 km WNW of Ubud, IndonesiaJanuary 20, 1917 · 233 km SW of this epicenter
  4. 6.5141 km NNE of Singaraja, IndonesiaApril 10, 1934 · 72 km SW of this epicenter
  5. 6.1184 km N of Sumenep, IndonesiaFebruary 28, 1936 · 281 km NW of this epicenter
  6. 6.0128 km N of Singaraja, IndonesiaAugust 17, 1953 · 110 km W of this epicenter
  7. 5.930 km NNE of Amlapura, IndonesiaMay 22, 1963 · 182 km S of this epicenter
  8. 5.857 km NNE of Labuan Lombok, IndonesiaMay 8, 1930 · 172 km SE of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 9 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 12,989 recorded deaths. The most severe:

  1. 1815M7.3

    Bali

    22 Nov 1815 · 215 km away · intensity IX

    11,453 deathstsunami

  2. 1917M6.6

    Bali

    20 Jan 1917 · 45 km away · intensity IX

    1,500 deathsModerate damage ($1–5M)tsunami

  3. 1857M7.0

    Timor Island:: Dilhi, Gera

    13 May 1857 · 169 km away

    36 deathsModerate damage ($1–5M)tsunami

  4. 1818M8.5

    Sumbawa Island: Bima

    8 Nov 1818 · 102 km away

    Moderate damage ($1–5M)tsunami

  5. 1843M6.0

    Java: Genteng Island

    7 Feb 1843 · 247 km away

    tsunami

  6. 1889M6.0

    Madura Island, Java

    23 Nov 1889 · 297 km away

    tsunami

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

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