Reviewed by USGSPhilippines109y ago
M6.6 earthquake 9 km ENE of Hinatuan, Philippines
Sunday, March 16, 1919, 07:33:21 UTC · 8.391°N, 126.416°E
A magnitude 6.6 earthquake struck 9 km ENE of Hinatuan, Philippines on Sunday, March 16, 1919, 07:33:21 UTC, at a depth of 60.0 km (shallow). It is the strongest earthquake within 300 km since an M7.2 on January 1, 1919.
- Magnitude
- 6.6
- Strong · mw
- Depth
- 60 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
133 kilotons of TNT
That is about 9 times the Hiroshima bomb. It released about 279 times the energy of a magnitude 5.0.
Tectonic setting
78 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
60 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 22 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.774 km ENE of Barcelona, PhilippinesJuly 12, 1911 · 68 km E of this epicenter
- 7.222 km ESE of Bobon, PhilippinesJanuary 1, 1919 · 176 km S of this epicenter
- 7.270 km ENE of La Paz, PhilippinesApril 25, 1913 · 108 km NE of this epicenter
- 7.110 km W of Bigaan, PhilippinesJuly 20, 1907 · 26 km W of this epicenter
- 6.94 km ESE of Panikian, PhilippinesFebruary 7, 1918 · 160 km S of this epicenter
- 6.837 km E of Lamitan, PhilippinesMarch 6, 1911 · 266 km S of this epicenter
- 6.819 km ENE of Aras-asan, PhilippinesJuly 1, 1918 · 62 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 17 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 4 recorded deaths. The most severe:
- 1870
Mindanao: Davao,Blanco
4 Nov 1870 · 191 km away
4 deathsModerate damage ($1–5M)
- 1879
Nw Mindanao: Surigao
30 Jun 1879 · 186 km away · intensity X
Extreme damage ($25M+)
- 1911M7.8
Mindanao: Talacogon,Davao,Butuan
12 Jul 1911 · 82 km away · intensity X
Severe damage ($5–24M)tsunami
- 1871
Camiguin Island: Mambajao,Catarman
20 Feb 1871 · 212 km away · intensity IX
Severe damage ($5–24M)tsunami
- 1871
W Mindanao: Cotabato,Polloc Harbor
8 Dec 1871 · 268 km away · intensity IX
Severe damage ($5–24M)
- 1885
E Mindanao: Surigao
22 Feb 1885 · 186 km away · intensity VIII
Severe damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.