QuakeScout
Magnitude6.7

Reviewed by USGSIndonesia99y ago

M6.7 earthquake 24 km ESE of Ruteng, Indonesia

Wednesday, November 28, 1928, 10:43:12 UTC · 8.700°S, 120.666°E

A magnitude 6.7 earthquake struck 24 km ESE of Ruteng, Indonesia on Wednesday, November 28, 1928, 10:43:12 UTC, at a depth of 20.0 km (shallow). It is the strongest earthquake within 300 km since an M7.0 on March 3, 1927.

Magnitude
6.7
Strong · mw
Depth
20 km
Shallow
Felt reports
0
Did You Feel It?
Est. shaking
VII
Very strong (ShakeMap)
PAGER alert
None
Not issued
Tsunami
No flag
USGS feed

Outlined circle: this earthquakeColoured lines: estimated shaking intensity (USGS ShakeMap)

In context

How big was it, and why here?

Energy released

194 kilotons of TNT

That is about 13 times the Hiroshima bomb. It released about 407 times the energy of a magnitude 5.0.

Tectonic setting

8 km

from the nearest mapped plate boundary, between the Sunda and Timor plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.

Depth: shallow

20 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 7 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.0199 km SSW of Katabu, IndonesiaMarch 3, 1927 · 270 km NE of this epicenter
  2. 7.084 km SSE of Dompu, IndonesiaMay 9, 1922 · 227 km W of this epicenter
  3. 6.377 km WSW of Waingapu, IndonesiaOctober 15, 1923 · 179 km SW of this epicenter
  4. 6.362 km S of Waingapu, IndonesiaOctober 15, 1923 · 175 km S of this epicenter
  5. 6.1163 km SSW of Waingapu, IndonesiaMarch 15, 1925 · 279 km SW of this epicenter
  6. 5.877 km NE of Ruteng, IndonesiaSeptember 28, 1926 · 74 km NE of this epicenter
  7. 5.7123 km W of Waingapu, IndonesiaJuly 26, 1928 · 205 km SW of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 6 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 500 recorded deaths. The most severe:

  1. 1820M7.5

    Sulawesi: Makasar

    29 Dec 1820 · 263 km away · intensity X

    500 deathsModerate damage ($1–5M)tsunami

  2. 1828

    Sulawesi

    29 Dec 1828 · 263 km away · intensity IX

    Severe damage ($5–24M)tsunami

  3. 1836M7.5

    Flores Sea

    28 Nov 1836 · 221 km away

    Limited damage (under $1M)tsunami

  4. 1837

    Sumbawa Island: Bima

    28 Nov 1837 · 239 km away · intensity IX

    Limited damage (under $1M)

  5. 1897M5.5

    Kajuadi Island

    15 Mar 1897 · 212 km away

    tsunami

  6. 1836

    Flores Sea

    5 Mar 1836 · 221 km away

    tsunami

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

Nearby trackers

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