Reviewed by USGSPhilippines121y ago
M7.5 earthquake 7 km N of Luklukan, Philippines
Thursday, April 18, 1907, 20:59:53 UTC · 14.390°N, 122.720°E
A magnitude 7.5 earthquake struck 7 km N of Luklukan, Philippines on Thursday, April 18, 1907, 20:59:53 UTC, at a depth of 15.0 km (shallow). No earthquake of this size or larger appears within 300 km in the USGS catalog since 1900.
- Magnitude
- 7.5
- Major · mw
- Depth
- 15 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 earthquakeDashed circle: 200 km aftershock search area
In context
How big was it, and why here?
Energy released
2.9 megatons of TNT
That is about 191 times the Hiroshima bomb. It released about 6,026 times the energy of a magnitude 5.0.
Tectonic setting
110 km
from the nearest mapped plate boundary, between the Philippine Sea and Sunda plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
15 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 200 km
USGS lists 1 M2.5+ earthquake within 200 km in the following 30 days; the largest was M7.4 on April 18, 1907. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists no earlier M5.0+ earthquakes within 300 km.
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 45 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 494 recorded deaths. The most severe:
- 1863M6.5
Manila, Rizal, Bulacan
3 Jun 1863 · 186 km away · intensity X
400 deathsExtreme damage ($25M+)tsunami
- 1840M6.5
Sorsogon,Masbate Is,Casiguran,Albay
22 Mar 1840 · 209 km away · intensity IX
52 deathsSevere damage ($5–24M)tsunami
- 1880M7.5
S Coast Luzon: Pasig River,Pampanga
18 Jul 1880 · 202 km away · intensity IX
20 deathsSevere damage ($5–24M)tsunami
- 1754
Taal Volcano
15 May 1754 · 191 km away · intensity X
12 deathsExtreme damage ($25M+)
- 1743
Luzon: Tayabas,Laguna
12 Jan 1743 · 128 km away · intensity X
5 deathsModerate damage ($1–5M)
- 1852M7.5
Luzon: Bataan, Rizal, Pampanga,Manila
16 Sep 1852 · 243 km away · intensity IX
3 deathsSevere damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.