Reviewed by USGSPhilippines9y ago
M4.5 earthquake 4 km NNW of Mangili, Philippines
Sunday, May 7, 2017, 01:29:39 UTC · 6.044°N, 125.671°E
A magnitude 4.5 earthquake struck 4 km NNW of Mangili, Philippines on Sunday, May 7, 2017, 01:29:39 UTC, at a depth of 107.1 km (intermediate). USGS received 1 “Did You Feel It?” report, with a maximum reported intensity of II (weak). It is the strongest earthquake within 300 km since an M4.7 on April 29, 2017.
- Magnitude
- 4.5
- Light · mb
- Depth
- 107 km
- Intermediate
- Felt reports
- 1
- Max intensity II
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeDashed circle: 50 km aftershock search area
In context
How big was it, and why here?
Energy released
85 tons of TNT
That is about 1/178 of the Hiroshima bomb. A magnitude 5.0 releases about 6 times more energy.
Tectonic setting
181 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: intermediate
107 km
Intermediate-depth earthquakes usually break inside a plate that is sinking into the mantle. Shaking spreads over a wide area but is gentler at the epicenter than a shallow quake of the same size.
Did You Feel It?
Where it was felt
Reports sent by people to USGS, grouped by place (most reports first). Intensity uses the Modified Mercalli scale (I–X): what people felt, not the magnitude.
| Place | Intensity | Reports | Distance |
|---|---|---|---|
| Buayan, Southern Mindanao, Philippines | II · Weak | 1 | 117 km |
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 50 km
USGS lists 1 M2.5+ earthquake within 50 km in the following 30 days; the largest was M4.2 on May 20, 2017. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 1,694 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.31918 Mindanao, Philippines EarthquakeAugust 15, 1918 · 194 km W of this epicenter
- 8.11924 Mindanao, Philippines EarthquakeApril 14, 1924 · 85 km NE of this epicenter
- 8.01972 Mindanao, Philippines EarthquakeDecember 2, 1972 · 118 km E of this epicenter
- 7.919 km WNW of Palimbang, PhilippinesAugust 16, 1976 · 184 km W of this epicenter
- 7.947 km ESE of Kalbay, PhilippinesMarch 14, 1913 · 61 km SE of this epicenter
- 7.877 km E of Baculin, PhilippinesMay 25, 1943 · 231 km NE of this epicenter
- 7.8161 km SE of Sarangani, PhilippinesApril 1, 1936 · 213 km S of this epicenter
- 7.6101 km SE of Sarangani, PhilippinesDecember 16, 1910 · 158 km S of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 44 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 11,122 recorded deaths. The most severe:
- 1976M8.0
Mindanao: S
16 Aug 1976 · 177 km away · intensity VI
8,000 deaths$134 million damagetsunami
- 1856
Sangihe Pulau (Volcanic)
2 Mar 1856 · 265 km away
2,806 deathsSevere damage ($5–24M)tsunami
- 1913M7.8
Sangihe Island
14 Mar 1913 · 91 km away · intensity IX
138 deathsModerate damage ($1–5M)tsunami
- 1928M7.4
Cotabato,N Coast Of Illana Bay
19 Dec 1928 · 174 km away · intensity VII
97 deathsModerate damage ($1–5M)tsunami
- 1918M8.3
Mindanao: Cotabato
15 Aug 1918 · 194 km away · intensity X
52 deathsSevere damage ($5–24M)tsunami
- 2002M7.5
Mindanao
5 Mar 2002 · 157 km away
15 deaths$2 million damagetsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.