QuakeScout
Magnitude3.3

Reported by EMSCPhilippines28d ago

M3.3 earthquake in Mindanao, Philippines

Sunday, August 30, 2026, 05:21:49 UTC · 6.750°N, 126.360°E

A magnitude 3.3 earthquake struck in Mindanao, Philippines on Sunday, August 30, 2026, 05:21:49 UTC, at a depth of 17.0 km (shallow).

Magnitude
3.3
Minor · m
Depth
17 km
Shallow
Reported by
EMSC
Agency PIVS
Nearest tracker
111 km
from Davao

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

In context

How big was it, and why here?

Energy released

1 tons of TNT

That is about 1/11,203 of the Hiroshima bomb. A magnitude 5.0 releases about 355 times more energy.

Tectonic setting

98 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

17 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 4 M2.5+ earthquakes within 50 km since this event; the largest was M4.5 on September 2, 2026. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

M3M41h6h1d3d7d14d30dMainshock M3.3
Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.
  1. 3.2Mindanao, Philippines15d ago · 38 km SE of this epicenter
  2. 4.536 km SE of Bobon, Philippines24d ago · 25 km SE of this epicenter
  3. 3.2Mindanao, Philippines28d ago · 14 km NE of this epicenter

Regional history

Past M5+ earthquakes within 300 km

USGS lists 2,132 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 · 294 km SW of this epicenter
  2. 8.11924 Mindanao, Philippines EarthquakeApril 14, 1924 · 25 km SW of this epicenter
  3. 8.01972 Mindanao, Philippines EarthquakeDecember 2, 1972 · 49 km SE of this epicenter
  4. 7.919 km WNW of Palimbang, PhilippinesAugust 16, 1976 · 264 km W of this epicenter
  5. 7.947 km ESE of Kalbay, PhilippinesMarch 14, 1913 · 144 km S of this epicenter
  6. 7.825 km SW of Kablalan, PhilippinesJune 7, 2026 · 193 km SW of this epicenter
  7. 7.877 km E of Baculin, PhilippinesMay 25, 1943 · 123 km NE of this epicenter
  8. 7.8161 km SE of Sarangani, PhilippinesApril 1, 1936 · 276 km S of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 58 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 8,493 recorded deaths. The most severe:

  1. 1976M8.0

    Mindanao: S

    16 Aug 1976 · 256 km away · intensity VI

    8,000 deaths$134 million damagetsunami

  2. 1913M7.8

    Sangihe Island

    14 Mar 1913 · 157 km away · intensity IX

    138 deathsModerate damage ($1–5M)tsunami

  3. 2026M7.8

    Mindanao: S; Indonesia

    7 Jun 2026 · 194 km away · intensity VIII

    107 deaths$25 million damagetsunami

  4. 1928M7.4

    Cotabato,N Coast Of Illana Bay

    19 Dec 1928 · 234 km away · intensity VII

    97 deathsModerate damage ($1–5M)tsunami

  5. 1918M8.3

    Mindanao: Cotabato

    15 Aug 1918 · 294 km away · intensity X

    52 deathsSevere damage ($5–24M)tsunami

  6. 2002M7.5

    Mindanao

    5 Mar 2002 · 247 km away

    15 deaths$2 million damagetsunami

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

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