Reviewed by USGSIndonesia7y ago
M4.5 earthquake 237 km WSW of Tual, Indonesia
Friday, October 18, 2019, 23:27:06 UTC · 6.159°S, 130.676°E
A magnitude 4.5 earthquake struck 237 km WSW of Tual, Indonesia on Friday, October 18, 2019, 23:27:06 UTC, at a depth of 71.1 km (intermediate). It is the strongest earthquake within 300 km since an M4.8 on October 18, 2019.
- Magnitude
- 4.5
- Light · mb
- Depth
- 71 km
- Intermediate
- 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
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
60 km
from the nearest mapped plate boundary, between the Banda Sea and Timor plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: intermediate
71 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
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 50 km
USGS has not published any M2.5+ earthquake within 50 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 1,375 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.51938 Banda Sea EarthquakeFebruary 1, 1938 · 162 km NE of this epicenter
- 8.11963 Banda Sea EarthquakeNovember 4, 1963 · 148 km SW of this epicenter
- 7.7Banda SeaNovember 2, 1950 · 181 km SW of this epicenter
- 7.6196 km S of Ambon, IndonesiaJanuary 27, 2006 · 292 km W of this epicenter
- 7.5273 km WSW of Tual, IndonesiaJune 3, 1927 · 68 km S of this epicenter
- 7.3281 km WSW of Tual, IndonesiaDecember 20, 1992 · 57 km SW of this epicenter
- 7.3Banda SeaJune 24, 2019 · 169 km W of this epicenter
- 7.1196 km SSE of Ambon, IndonesiaJuly 4, 1914 · 202 km NW of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 16 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 67 recorded deaths. The most severe:
- 1852M8.3
Maluku: Bandanaira
25 Nov 1852 · 144 km away · intensity IX
60 deathsSevere damage ($5–24M)tsunami
- 1763
Bandaneira
12 Sep 1763 · 77 km away · intensity X
7 deathsModerate damage ($1–5M)tsunami
- 1710
Bandaneira
6 Mar 1710 · 200 km away · intensity IX
Severe damage ($5–24M)tsunami
- 1938M8.6
New Guinea
1 Feb 1938 · 162 km away · intensity VI
Moderate damage ($1–5M)tsunami
- 1975M5.9
Maluku: Bandanaira
15 Jan 1975 · 149 km away · intensity VII
Moderate damage ($1–5M)tsunami
- 1890
Bandaneira
23 Nov 1890 · 204 km away · intensity VII
Moderate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.