Reviewed by USGSTimor Leste4y ago
M4.3 earthquake 133 km NNW of Pante Makasar, Timor Leste
Sunday, January 9, 2022, 23:20:02 UTC · 8.121°S, 123.840°E
A magnitude 4.3 earthquake struck 133 km NNW of Pante Makasar, Timor Leste on Sunday, January 9, 2022, 23:20:02 UTC, at a depth of 10.0 km (shallow).
- Magnitude
- 4.3
- Light · mb
- Depth
- 10 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 earthquakeDashed circle: 50 km aftershock search area
In context
How big was it, and why here?
Energy released
43 tons of TNT
That is about 1/354 of the Hiroshima bomb. A magnitude 5.0 releases about 11 times more energy.
Tectonic setting
38 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: shallow
10 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 50 km
USGS lists 1 M2.5+ earthquake within 50 km in the following 30 days; the largest was M4.3 on January 9, 2022. 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 615 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9169 km NNE of Maumere, IndonesiaJune 17, 1996 · 176 km NW of this epicenter
- 7.837 km WNW of Maumere, IndonesiaDecember 12, 1992 · 218 km W of this epicenter
- 7.563 km NW of Maubara, Timor LesteNovember 11, 2004 · 113 km E of this epicenter
- 7.3Flores SeaDecember 14, 2021 · 187 km W of this epicenter
- 7.270 km SE of Maumere, IndonesiaOctober 20, 1938 · 156 km SW of this epicenter
- 7.077 km N of Baukau, Timor LesteFebruary 14, 1952 · 295 km E of this epicenter
- 7.0199 km SSW of Katabu, IndonesiaMarch 3, 1927 · 258 km NW of this epicenter
- 7.0194 km SE of Baubau, IndonesiaAugust 6, 1914 · 175 km N 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 2,963 recorded deaths. The most severe:
- 1992M7.8
Flores Region, Maumere, Babi
12 Dec 1992 · 218 km away · intensity XI
2,500 deaths$100 million damagetsunami
- 1896
Timor: Alor Island
18 Apr 1896 · 101 km away · intensity VIII
250 deathsModerate damage ($1–5M)
- 1987M6.5
Timor: Pantar, Mount Sirung
26 Nov 1987 · 37 km away
125 deaths$5 million damagetsunami
- 2004M7.5
Kepulauan Alor
11 Nov 2004 · 113 km away
34 deathsSevere damage ($5–24M)tsunami
- 1991M6.5
Timor: Kalabahi, Dili
4 Jul 1991 · 93 km away
28 deaths$8 million damage
- 1982M5.9
Flores Island: Eastern
25 Dec 1982 · 89 km away
13 deaths$1 million damagetsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.