Olongapo

Earthquakes near Olongapo through history

From 1900 to October 19, 2026, USGS recorded 16 earthquakes of magnitude 6 or more within 100 km of Olongapo, or 200 km for magnitude 7 and above. 9 of them reached magnitude 7 or more; the strongest on either list was an estimated magnitude 8 on November 30, 1645 (Luzon: S Batangas To N Cagayan).

Open the live map

The last 30 days · as of

USGS recorded one earthquake of magnitude 4.5 or more within 100 km of Olongapo in the last 30 days.

The latest: magnitude 4.8 on October 2 (78 km WSW of San Nicolas, Philippines).

Live
Open the live map

What the record holds

The deadliest was not the strongest: a magnitude 7.7 on July 16, 1990 (4 km E of Macapsing, Philippines), for which NOAA records 2,412 deaths. NOAA’s list of significant earthquakes has 28 here, back to 3551 BCE. NOAA records deaths in 15 of the events here, 4,380 in all. The latest on NOAA’s list is a magnitude 6.1 on April 22, 2019 (3 km WSW of San Francisco, Philippines). NOAA’s record here begins in 3551 BCE with an eruption (Pinatubo). It grows thinner going back: 9 of the 28 significant earthquakes NOAA lists here are from 1927 on. NOAA lists 5 tsunamis that began within 100 km of Olongapo, and 2 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 1.5 m, on December 11, 1999. NOAA lists 6 significant eruptions of one volcano within 100 km of Olongapo. The largest was Pinatubo in 3551 BCE, at 6 on the volcanic explosivity index.

The events

Good to know

  • An event counts for Olongapo when it began within 100 km of its centre, or 200 km for an earthquake of magnitude 7 or more. Damage can reach further.
  • USGS counts here start at magnitude 6: the catalogue’s smaller quakes thin out going back, where few instruments listened.
  • NOAA lists significant events only: earthquakes that killed, did about $1 million of damage, reached magnitude 7.5 or intensity X, or raised a tsunami, and eruptions and tsunamis by like measures. Magnitudes before 1900 are its estimates from written accounts.
  • Deaths are NOAA’s total for each event, wherever people died, its tsunami and fires included. A tsunami counts the dead its runup records give for this place: NOAA’s total for a tsunami includes its source quake’s.
  • A tsunami from elsewhere counts where one of its runups killed or rose a metre or more.
  • Counted to October 19, 2026, as is the map. The last 30 days ask USGS again.

How the layers work, where their data comes from and what they can’t tell you: Earthquakes, live, The world through history

Other places nearby