QuakeScout
Magnitude3.0

Reported by EMSCPhilippines10d ago

M3.0 earthquake in Mindanao, Philippines

Thursday, September 17, 2026, 16:51:08 UTC · 5.880°N, 126.620°E

A magnitude 3.0 earthquake struck in Mindanao, Philippines on Thursday, September 17, 2026, 16:51:08 UTC, at a depth of 14.0 km (shallow).

Magnitude
3.0
Minor · m
Depth
14 km
Shallow
Reported by
EMSC
Agency PIVS
Nearest tracker
162 km
from General Santos

Outlined circle: this earthquakeDashed circle: 50 km aftershock search area

In context

How big was it, and why here?

Energy released

477 kg of TNT

That is about 1/31,575 of the Hiroshima bomb. A magnitude 5.0 releases about 1,000 times more energy.

Tectonic setting

88 km

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

Depth: shallow

14 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.

After the main event

Aftershocks within 50 km

USGS and EMSC list 3 M2.5+ earthquakes within 50 km since this event; the largest was M3.9 on September 25, 2026. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

M3M41h6h1d3d7dMainshock M3.0
Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.
  1. 3.9Mindanao, Philippines2d ago · 36 km N of this epicenter
  2. 3.3Mindanao, Philippines5d ago · 28 km S of this epicenter
  3. 3.5Mindanao, Philippines9d ago · 22 km SE of this epicenter

Regional history

Past M5+ earthquakes within 300 km

USGS lists 2,108 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 8.31918 Mindanao, Philippines EarthquakeAugust 15, 1918 · 293 km W of this epicenter
  2. 8.11924 Mindanao, Philippines EarthquakeApril 14, 1924 · 97 km NW of this epicenter
  3. 8.01972 Mindanao, Philippines EarthquakeDecember 2, 1972 · 61 km N of this epicenter
  4. 7.919 km WNW of Palimbang, PhilippinesAugust 16, 1976 · 290 km W of this epicenter
  5. 7.947 km ESE of Kalbay, PhilippinesMarch 14, 1913 · 89 km SW of this epicenter
  6. 7.825 km SW of Kablalan, PhilippinesJune 7, 2026 · 176 km W of this epicenter
  7. 7.877 km E of Baculin, PhilippinesMay 25, 1943 · 181 km NE of this epicenter
  8. 7.8161 km SE of Sarangani, PhilippinesApril 1, 1936 · 182 km S of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 55 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 11,298 recorded deaths. The most severe:

  1. 1976M8.0

    Mindanao: S

    16 Aug 1976 · 283 km away · intensity VI

    8,000 deaths$134 million damagetsunami

  2. 1856

    Sangihe Pulau (Volcanic)

    2 Mar 1856 · 275 km away

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

  3. 1913M7.8

    Sangihe Island

    14 Mar 1913 · 80 km away · intensity IX

    138 deathsModerate damage ($1–5M)tsunami

  4. 2026M7.8

    Mindanao: S; Indonesia

    7 Jun 2026 · 177 km away · intensity VIII

    107 deaths$25 million damagetsunami

  5. 1928M7.4

    Cotabato,N Coast Of Illana Bay

    19 Dec 1928 · 278 km away · intensity VII

    97 deathsModerate damage ($1–5M)tsunami

  6. 1918M8.3

    Mindanao: Cotabato

    15 Aug 1918 · 293 km away · intensity X

    52 deathsSevere damage ($5–24M)tsunami

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

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