QuakeScout
Magnitude4.1

Reviewed by USGSIndonesia36y ago

M4.1 earthquake 116 km N of Komodo, Indonesia

Saturday, June 9, 1990, 21:15:05 UTC · 7.542°S, 119.362°E

A magnitude 4.1 earthquake struck 116 km N of Komodo, Indonesia on Saturday, June 9, 1990, 21:15:05 UTC, at a depth of 298.3 km (intermediate).

Magnitude
4.1
Light · mb
Depth
298 km
Intermediate
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 tons of TNT

That is about 1/707 of the Hiroshima bomb. A magnitude 5.0 releases about 22 times more energy.

Tectonic setting

130 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: intermediate

298 km

Intermediate-depth earthquakes usually break inside a plate that is sinking into the mantle. Shaking spreads over a wide area but is gentler at the epicenter than a shallow quake of the same size.

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 50 km

USGS has not published any M2.5+ earthquake within 50 km in the 30 days after this event.

Regional history

Past M5+ earthquakes within 300 km

USGS lists 188 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.1135 km NNE of Labuan Bajo, IndonesiaMay 24, 1990 · 112 km E of this epicenter
  2. 7.0133 km NNE of Pototano, IndonesiaJuly 5, 1911 · 160 km W of this epicenter
  3. 7.084 km SSE of Dompu, IndonesiaMay 9, 1922 · 206 km S of this epicenter
  4. 6.835 km SW of Ruteng, IndonesiaJanuary 26, 1968 · 178 km SE of this epicenter
  5. 6.893 km NNW of Ende, IndonesiaJuly 31, 1989 · 230 km E of this epicenter
  6. 6.746 km NE of Bima, IndonesiaNovember 2, 1954 · 77 km SW of this epicenter
  7. 6.724 km ESE of Ruteng, IndonesiaNovember 28, 1928 · 193 km SE of this epicenter
  8. 6.5120 km WSW of Waingapu, IndonesiaDecember 19, 1986 · 265 km S of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 11 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 502 recorded deaths. The most severe:

  1. 1820M7.5

    Sulawesi: Makasar

    29 Dec 1820 · 72 km away · intensity X

    500 deathsModerate damage ($1–5M)tsunami

  2. 1961M6.5

    Flores: Endeh

    16 Mar 1961 · 300 km away · intensity VIII

    2 deathsModerate damage ($1–5M)

  3. 1828

    Sulawesi

    29 Dec 1828 · 72 km away · intensity IX

    Severe damage ($5–24M)tsunami

  4. 1818M8.5

    Sumbawa Island: Bima

    8 Nov 1818 · 267 km away

    Moderate damage ($1–5M)tsunami

  5. 1982M5.6

    Flores Islands: Ruteng

    6 Aug 1982 · 163 km away

    Moderate damage ($1–5M)

  6. 1836M7.5

    Flores Sea

    28 Nov 1836 · 111 km away

    Limited damage (under $1M)tsunami

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

Nearby trackers

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