Reviewed by USGSPhilippines121y ago
M6.4 earthquake 75 km ENE of Sulangan, Philippines
Monday, May 20, 1907, 07:47:37 UTC · 11.088°N, 126.500°E
A magnitude 6.4 earthquake struck 75 km ENE of Sulangan, Philippines on Monday, May 20, 1907, 07:47:37 UTC, at a depth of 10.0 km (shallow). It is the strongest earthquake within 300 km since an M6.6 on October 10, 1906.
- Magnitude
- 6.4
- Strong · mw
- Depth
- 10 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 earthquake
In context
How big was it, and why here?
Energy released
54 kilotons of TNT
That is about 4 times the Hiroshima bomb. It released about 114 times the energy of a magnitude 5.0.
Tectonic setting
30 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
10 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 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 2 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 9 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1879
Nw Mindanao: Surigao
30 Jun 1879 · 180 km away · intensity X
Extreme damage ($25M+)
- 1897M7.9
Masbate Island
13 May 1897 · 291 km away · intensity VIII
Severe damage ($5–24M)tsunami
- 1743
Leyte
Sep 1743 · 240 km away
Severe damage ($5–24M)
- 1871
Camiguin Island: Mambajao,Catarman
20 Feb 1871 · 290 km away · intensity IX
Severe damage ($5–24M)tsunami
- 1885
E Mindanao: Surigao
22 Feb 1885 · 180 km away · intensity VIII
Severe damage ($5–24M)
- 1897M8.1
Northern Samar
18 Oct 1897 · 115 km away · intensity IX
Moderate damage ($1–5M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.