QuakeScout
Magnitude4.5

Reviewed by USGSIndonesia15y ago

M4.5 earthquake 270 km SSW of Kroya, Indonesia

Sunday, April 10, 2011, 04:14:09 UTC · 9.886°S, 108.298°E

A magnitude 4.5 earthquake struck 270 km SSW of Kroya, Indonesia on Sunday, April 10, 2011, 04:14:09 UTC, at a depth of 12.0 km (shallow). It is the strongest earthquake within 300 km since an M4.7 on April 6, 2011.

Magnitude
4.5
Light · mb
Depth
12 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

85 tons of TNT

That is about 1/178 of the Hiroshima bomb. A magnitude 5.0 releases about 6 times more energy.

Tectonic setting

30 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

12 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 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 297 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.7226 km SSW of Singaparna, IndonesiaJuly 17, 2006 · 117 km NW of this epicenter
  2. 7.6233 km S of Pundong, IndonesiaSeptember 11, 1921 · 259 km E of this epicenter
  3. 7.487 km SSW of Srandakan, IndonesiaJuly 23, 1943 · 220 km NE of this epicenter
  4. 7.1138 km SSE of Pundong, IndonesiaSeptember 10, 1926 · 268 km E of this epicenter
  5. 7.066 km SSW of Banjar, IndonesiaSeptember 2, 2009 · 259 km NW of this epicenter
  6. 6.9south of Java, IndonesiaJuly 24, 1979 · 154 km SW of this epicenter
  7. 6.992 km S of Pundong, IndonesiaSeptember 27, 1937 · 264 km NE of this epicenter
  8. 6.7278 km SSW of Kawalu, IndonesiaApril 3, 2011 · 66 km W 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 1,128 recorded deaths. The most severe:

  1. 2006M7.7

    Java

    17 Jul 2006 · 117 km away

    802 deaths$55 million damagetsunami

  2. 1943M8.1

    Java: Jogyakarta

    23 Jul 1943 · 191 km away · intensity VIII

    213 deathsSevere damage ($5–24M)

  3. 2009M7.0

    Java

    2 Sep 2009 · 259 km away

    81 deathsSevere damage ($5–24M)tsunami

  4. 1979M6.1

    Java

    2 Nov 1979 · 248 km away

    30 deaths$16 million damage

  5. 1937M7.2

    Java: Jogyakarta: Klumpit,Prambanan

    27 Sep 1937 · 215 km away · intensity IX

    1 deathSevere damage ($5–24M)

  6. 2010M5.1

    Java: Garut

    10 Jan 2010 · 225 km away

    1 death

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

Nearby trackers

Closest city pages