Reviewed by USGSPapua New Guinea26y ago
M4.5 earthquake 68 km SSE of Kokopo, Papua New Guinea
Wednesday, December 27, 2000, 06:56:24 UTC · 4.862°S, 152.607°E
A magnitude 4.5 earthquake struck 68 km SSE of Kokopo, Papua New Guinea on Wednesday, December 27, 2000, 06:56:24 UTC, at a depth of 66.2 km (shallow). It is the strongest earthquake within 300 km since an M4.8 on December 24, 2000.
- Magnitude
- 4.5
- Light · mb
- Depth
- 66 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
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
46 km
from the nearest mapped plate boundary, between the North Bismarck and South Bismarck plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
66 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 3 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M4.8 on January 18, 2001. 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 1,707 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.21919 Papua New Guinea EarthquakeMay 6, 1919 · 139 km E of this epicenter
- 8.11971 Bougainville EarthquakeJuly 26, 1971 · 64 km E of this epicenter
- 8.01971 New Britain EarthquakeJuly 14, 1971 · 155 km SE of this epicenter
- 8.02000 New Ireland EarthquakeNovember 16, 2000 · 109 km NW of this epicenter
- 8.060 km SE of Kokopo, Papua New GuineaJanuary 1, 1916 · 12 km N of this epicenter
- 7.874 km SSW of Kokopo, Papua New GuineaFebruary 2, 1920 · 66 km W of this epicenter
- 7.8138 km SSW of Kokopo, Papua New GuineaNovember 17, 2000 · 115 km SW of this epicenter
- 7.8135 km SE of Kokopo, Papua New GuineaNovember 16, 2000 · 69 km SE of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 38 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 529 recorded deaths. The most severe:
- 1937
Keravia, Rabaul, Kokopo
28 May 1937 · 80 km away · intensity VIII
507 deathsLimited damage (under $1M)tsunami
- 1983M6.4
Ulawun, Rabaul
22 Dec 1983 · 101 km away · intensity V
10 deaths$25 million damage
- 1941M7.4
Bismarck Sea
13 Jan 1941 · 97 km away
4 deathsModerate damage ($1–5M)tsunami
- 1971M7.9
New Ireland: Bougainville
14 Jul 1971 · 160 km away · intensity IX
3 deathsUnder $1 million damagetsunami
- 2000M8.0
New Ireland, Duke Of York
16 Nov 2000 · 101 km away
2 deathsModerate damage ($1–5M)tsunami
- 1985M7.1
New Britain: Bialla, Piona
10 May 1985 · 191 km away · intensity VIII
1 death$1 million damage
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.