Reviewed by USGSPhilippines105y ago
M6.2 earthquake 6 km S of Bangad, Philippines
Sunday, April 23, 1922, 21:30:46 UTC · 12.106°N, 123.392°E
A magnitude 6.2 earthquake struck 6 km S of Bangad, Philippines on Sunday, April 23, 1922, 21:30:46 UTC, at a depth of 35.0 km (shallow). It is the strongest earthquake within 300 km since an M6.5 on May 21, 1921.
- Magnitude
- 6.2
- Strong · mw
- Depth
- 35 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
33 kilotons of TNT
That is about 2 times the Hiroshima bomb. It released about 70 times the energy of a magnitude 5.0.
Tectonic setting
262 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
35 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 14 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 · 264 km N of this epicenter
- 7.470 km NE of Sabang Indan, PhilippinesApril 18, 1907 · 285 km N of this epicenter
- 7.15 km N of Capoocan, PhilippinesMarch 5, 1908 · 161 km SE of this epicenter
- 6.829 km NNW of Roxas City, PhilippinesMarch 12, 1915 · 81 km W of this epicenter
- 6.6Luzon, PhilippinesNovember 24, 1907 · 167 km NW of this epicenter
- 6.544 km ENE of Anito, PhilippinesMay 21, 1921 · 252 km E of this epicenter
- 6.55 km SSW of Mantalongon, PhilippinesOctober 11, 1906 · 226 km S of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 34 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 64 recorded deaths. The most severe:
- 1840M6.5
Sorsogon,Masbate Is,Casiguran,Albay
22 Mar 1840 · 104 km away · intensity IX
52 deathsSevere damage ($5–24M)tsunami
- 1922M6.3
Cebu Island, Mactan Island
27 Feb 1922 · 226 km away · intensity V
5 deathsModerate damage ($1–5M)tsunami
- 1743
Luzon: Tayabas,Laguna
12 Jan 1743 · 286 km away · intensity X
5 deathsModerate damage ($1–5M)
- 1907M7.6
Se Luzon: Camarines
18 Apr 1907 · 215 km away · intensity IX
2 deathsSevere damage ($5–24M)
- 1897M7.9
Masbate Island
13 May 1897 · 67 km away · intensity VIII
Severe damage ($5–24M)tsunami
- 1869M7.0
Masbate Island
16 Aug 1869 · 45 km away · intensity IX
Severe damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.