Reviewed by USGSPhilippines121y ago
M6.9 earthquake 128 km NNW of Davila, Philippines
Wednesday, October 17, 1906, 09:42:05 UTC · 19.564°N, 120.159°E
A magnitude 6.9 earthquake struck 128 km NNW of Davila, Philippines on Wednesday, October 17, 1906, 09:42:05 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M7.1 on June 19, 1906.
- Magnitude
- 6.9
- Strong · 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 earthquake
In context
How big was it, and why here?
Energy released
294 kilotons of TNT
That is about 20 times the Hiroshima bomb. It released about 617 times the energy of a magnitude 5.0.
Tectonic setting
0 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
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 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 8 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 2 recorded deaths. The most severe:
- 1892
Luzon: Abra,Pangasinan,Union
16 Mar 1892 · 256 km away · intensity X
2 deathsSevere damage ($5–24M)
- 1721
Ne Luzon: Cagayan Valley
14 Jan 1721 · 224 km away
Moderate damage ($1–5M)
- 1866
N Luzon: Laoag
28 Dec 1866 · 159 km away · intensity VIII
Moderate damage ($1–5M)
- 1874
Lepanto-Bontoc
3 Aug 1874 · 289 km away
Moderate damage ($1–5M)
- 1892
Batan Island,San Domingo
8 Mar 1892 · 250 km away · intensity VIII
Moderate damage ($1–5M)
- 1897M7.9
Luzon: Ilocos Sur
15 Aug 1897 · 175 km away · intensity VIII
Limited damage (under $1M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.