Reviewed by USGSFiji21y ago
M4.7 earthquake 196 km ENE of Levuka, Fiji
Monday, April 25, 2005, 08:28:43 UTC · 17.598°S, 178.896°W
A magnitude 4.7 earthquake struck 196 km ENE of Levuka, Fiji on Monday, April 25, 2005, 08:28:43 UTC, at a depth of 511.0 km (deep). It is the strongest earthquake within 300 km since an M4.7 on April 20, 2005.
- Magnitude
- 4.7
- Light · mb
- Depth
- 511 km
- Deep
- 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
169 tons of TNT
That is about 1/89 of the Hiroshima bomb. A magnitude 5.0 releases about 3 times more energy.
Tectonic setting
203 km
from the nearest mapped plate boundary, between the Niuafo'ou and Australian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: deep
511 km
Deep earthquakes (over 300 km) happen deep inside subducting plates. They rarely cause damage, but can be felt faintly over very large distances.
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 5 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M4.3 on May 1, 2005. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 3.6200 km ENE of Levuka, Fiji21y ago · 5 km NE of this epicenter
- 4.2206 km ENE of Levuka, Fiji21y ago · 11 km NE of this epicenter
- 3.9208 km ENE of Levuka, Fiji21y ago · 14 km E of this epicenter
- 3.9209 km ENE of Levuka, Fiji21y ago · 15 km NE of this epicenter
- 4.3228 km E of Levuka, Fiji21y ago · 42 km SE of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 885 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.8Fiji regionJanuary 1, 1919 · 210 km SE of this epicenter
- 7.6178 km E of Levuka, FijiFebruary 22, 1909 · 67 km S of this epicenter
- 7.6144 km SSW of Leava, Wallis and FutunaMay 23, 1956 · 241 km N of this epicenter
- 7.6240 km E of Levuka, FijiMarch 9, 1994 · 71 km SE of this epicenter
- 7.4227 km E of Levuka, FijiAugust 21, 1910 · 44 km SE of this epicenter
- 7.2Fiji regionMarch 31, 1907 · 213 km E of this epicenter
- 7.2178 km ENE of Levuka, FijiMarch 29, 1998 · 21 km W of this epicenter
- 7.1217 km E of Levuka, FijiJuly 8, 1916 · 56 km SE of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 9 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1919M6.9
Rabi,Tunuloa Mission,Suvasavu
3 Oct 1919 · 178 km away · intensity VIII
Moderate damage ($1–5M)
- 1979M6.9
Fiji Islands
16 Nov 1979 · 148 km away
Moderate damage ($1–5M)tsunami
- 1932M6.4
Koro,Mudu,Suvasavu
8 Mar 1932 · 158 km away · intensity VII
Moderate damage ($1–5M)
- 1884
Macuata
Jan 1884 · 286 km away · intensity VII
Limited damage (under $1M)tsunami
- 1909M7.8
Fiji Islands
22 Feb 1909 · 46 km away
- 1919M7.8
Fiji Islands
1 Jan 1919 · 210 km away
tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.