Reviewed by USGSPhilippines115y ago
M6.2 earthquake 3 km WSW of Irosin, Philippines
Friday, November 8, 1912, 07:53:23 UTC · 12.688°N, 124.002°E
A magnitude 6.2 earthquake struck 3 km WSW of Irosin, Philippines on Friday, November 8, 1912, 07:53:23 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M7.1 on March 5, 1908.
- Magnitude
- 6.2
- 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
30 kilotons of TNT
That is about 2 times the Hiroshima bomb. It released about 63 times the energy of a magnitude 5.0.
Tectonic setting
176 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 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 8 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 · 235 km NW of this epicenter
- 7.470 km NE of Sabang Indan, PhilippinesApril 18, 1907 · 230 km N of this epicenter
- 7.15 km N of Capoocan, PhilippinesMarch 5, 1908 · 165 km SE of this epicenter
- 6.8123 km NE of Cabatuan, PhilippinesDecember 10, 1905 · 218 km NE of this epicenter
- 6.6Luzon, PhilippinesNovember 24, 1907 · 175 km NW of this epicenter
- 6.55 km SSW of Mantalongon, PhilippinesOctober 11, 1906 · 294 km S of this epicenter
- 6.456 km NE of Casuguran, PhilippinesNovember 16, 1907 · 290 km NW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 29 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 59 recorded deaths. The most severe:
- 1840M6.5
Sorsogon,Masbate Is,Casiguran,Albay
22 Mar 1840 · 26 km away · intensity IX
52 deathsSevere damage ($5–24M)tsunami
- 1743
Luzon: Tayabas,Laguna
12 Jan 1743 · 298 km away · intensity X
5 deathsModerate damage ($1–5M)
- 1907M7.6
Se Luzon: Camarines
18 Apr 1907 · 182 km away · intensity IX
2 deathsSevere damage ($5–24M)
- 1897M7.9
Masbate Island
13 May 1897 · 77 km away · intensity VIII
Severe damage ($5–24M)tsunami
- 1869M7.0
Masbate Island
16 Aug 1869 · 58 km away · intensity IX
Severe damage ($5–24M)tsunami
- 1743
Leyte
Sep 1743 · 169 km away
Severe damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.