QuakeScout
Magnitude4.3

Reviewed by USGSSolomon Islands13y ago

M4.3 earthquake 142 km SSW of Lata, Solomon Islands

Sunday, April 28, 2013, 20:51:33 UTC · 11.931°S, 165.327°E

A magnitude 4.3 earthquake struck 142 km SSW of Lata, Solomon Islands on Sunday, April 28, 2013, 20:51:33 UTC, at a depth of 10.0 km (shallow).

Magnitude
4.3
Light · mb
Depth
10 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

43 tons of TNT

That is about 1/354 of the Hiroshima bomb. A magnitude 5.0 releases about 11 times more energy.

Tectonic setting

11 km

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

Depth: shallow

10 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 1,655 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 8.02013 Santa Cruz Islands EarthquakeFebruary 6, 2013 · 128 km N of this epicenter
  2. 7.9199 km S of Lata, Solomon IslandsJuly 17, 1980 · 92 km SE of this epicenter
  3. 7.8146 km SSE of Lata, Solomon IslandsDecember 31, 1966 · 125 km E of this epicenter
  4. 7.8186 km NNW of Sola, VanuatuDecember 17, 1957 · 157 km E of this epicenter
  5. 7.8196 km NW of Sola, VanuatuOctober 7, 2009 · 132 km SE of this epicenter
  6. 7.7171 km NNW of Sola, VanuatuApril 21, 1997 · 164 km SE of this epicenter
  7. 7.7148 km NW of Sola, VanuatuOctober 7, 2009 · 175 km SE of this epicenter
  8. 7.7138 km SSE of Lata, Solomon IslandsJuly 18, 1934 · 119 km E of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 26 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 10 recorded deaths. The most severe:

  1. 2013M7.9

    Santa Cruz Islands

    6 Feb 2013 · 128 km away · intensity VIII

    10 deaths$36 million damagetsunami

  2. 1910M7.2

    Espiritu Santo

    10 Nov 1910 · 263 km away

    Moderate damage ($1–5M)tsunami

  3. 1997M7.7

    Santa Cruz Islands; Vanuatu

    21 Apr 1997 · 164 km away

    Limited damage (under $1M)tsunami

  4. 1980M7.5

    Santa Cruz Islands: Banks

    8 Jul 1980 · 126 km away

    Limited damage (under $1M)tsunami

  5. 1980M7.9

    Santa Cruz Islands; Vanuatu

    17 Jul 1980 · 92 km away

    tsunami

  6. 1934M7.8

    Santa Cruz Islands

    18 Jul 1934 · 153 km away

    tsunami

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

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