QuakeScout
Magnitude6.4

Reviewed by USGSPhilippines112y ago

M6.4 earthquake 233 km SSE of Sarangani, Philippines

Monday, February 14, 1916, 10:01:46 UTC · 3.544°N, 126.465°E

A magnitude 6.4 earthquake struck 233 km SSE of Sarangani, Philippines on Monday, February 14, 1916, 10:01:46 UTC, at a depth of 70.0 km (intermediate). It is the strongest earthquake within 300 km since an M7.5 on October 23, 1914.

Magnitude
6.4
Strong · mw
Depth
70 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

69 kilotons of TNT

That is about 5 times the Hiroshima bomb. It released about 145 times the energy of a magnitude 5.0.

Tectonic setting

139 km

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

Depth: intermediate

70 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 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 10 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.947 km ESE of Kalbay, PhilippinesMarch 14, 1913 · 231 km N of this epicenter
  2. 7.6101 km SE of Sarangani, PhilippinesDecember 16, 1910 · 134 km N of this epicenter
  3. 7.564 km NNW of Ternate, IndonesiaJune 25, 1907 · 258 km S of this epicenter
  4. 7.5210 km SSE of Sarangani, PhilippinesAugust 17, 1912 · 55 km W of this epicenter
  5. 7.5273 km N of Tobelo, IndonesiaOctober 23, 1914 · 188 km NE of this epicenter
  6. 6.837 km E of Lamitan, PhilippinesMarch 6, 1911 · 280 km N of this epicenter
  7. 6.5182 km NNW of Tobelo, IndonesiaApril 25, 1909 · 87 km SE of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 13 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 3,062 recorded deaths. The most severe:

  1. 1856

    Sangihe Pulau (Volcanic)

    2 Mar 1856 · 108 km away

    2,806 deathsSevere damage ($5–24M)tsunami

  2. 1913M7.8

    Sangihe Island

    14 Mar 1913 · 205 km away · intensity IX

    138 deathsModerate damage ($1–5M)tsunami

  3. 1845M7.0

    N Sulawesi: Menado, Tikala, Tomohon

    8 Feb 1845 · 291 km away · intensity IX

    118 deathsModerate damage ($1–5M)tsunami

  4. 1858M7.3

    N. Moluccas Islands

    13 Dec 1858 · 288 km away

    Severe damage ($5–24M)tsunami

  5. 1889M8.0

    N. Moluccas Islands

    6 Sep 1889 · 284 km away

    Moderate damage ($1–5M)tsunami

  6. 1857

    Sulawesi Island: Kema

    17 Nov 1857 · 282 km away

    Moderate damage ($1–5M)tsunami

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

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