Reviewed by USGSPhilippines110y ago
M6.0 earthquake 27 km NNE of Kaliliog, Philippines
Friday, September 7, 1917, 22:22:45 UTC · 14.144°N, 123.367°E
A magnitude 6.0 earthquake struck 27 km NNE of Kaliliog, Philippines on Friday, September 7, 1917, 22:22:45 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M6.0 on May 28, 1917.
- Magnitude
- 6.0
- Moderate · 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
13 kilotons of TNT
That is about the energy of the Hiroshima bomb. It released about 27 times the energy of a magnitude 5.0.
Tectonic setting
113 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 75 km
USGS has not published any M2.5+ earthquake within 75 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 12 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.57 km N of Luklukan, PhilippinesApril 18, 1907 · 75 km W of this epicenter
- 7.470 km NE of Sabang Indan, PhilippinesApril 18, 1907 · 59 km N of this epicenter
- 6.824 km N of Panukulan, PhilippinesJuly 9, 1907 · 203 km NW of this epicenter
- 6.829 km NNW of Roxas City, PhilippinesMarch 12, 1915 · 266 km S of this epicenter
- 6.8123 km NE of Cabatuan, PhilippinesDecember 10, 1905 · 280 km E of this epicenter
- 6.6Luzon, PhilippinesNovember 24, 1907 · 125 km SW of this epicenter
- 6.456 km NE of Casuguran, PhilippinesNovember 16, 1907 · 115 km NW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 43 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 1,826 recorded deaths. The most severe:
- 1911
Luzon: Taal Volcano
27 Jan 1911 · 257 km away · intensity IX
1,335 deathsSevere damage ($5–24M)tsunami
- 1863M6.5
Manila, Rizal, Bulacan
3 Jun 1863 · 258 km away · intensity X
400 deathsExtreme damage ($25M+)tsunami
- 1840M6.5
Sorsogon,Masbate Is,Casiguran,Albay
22 Mar 1840 · 150 km away · intensity IX
52 deathsSevere damage ($5–24M)tsunami
- 1880M7.5
S Coast Luzon: Pasig River,Pampanga
18 Jul 1880 · 263 km away · intensity IX
20 deathsSevere damage ($5–24M)tsunami
- 1754
Taal Volcano
15 May 1754 · 257 km away · intensity X
12 deathsExtreme damage ($25M+)
- 1743
Luzon: Tayabas,Laguna
12 Jan 1743 · 191 km away · intensity X
5 deathsModerate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.