Reviewed by USGSFiji7y ago
M4.0 earthquake 288 km E of Levuka, Fiji
Saturday, May 18, 2019, 19:19:47 UTC · 17.805°S, 177.972°W
A magnitude 4.0 earthquake struck 288 km E of Levuka, Fiji on Saturday, May 18, 2019, 19:19:47 UTC, at a depth of 593.0 km (deep).
- Magnitude
- 4.0
- Light · mb
- Depth
- 593 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
15 tons of TNT
That is about 1/998 of the Hiroshima bomb. A magnitude 5.0 releases about 32 times more energy.
Tectonic setting
148 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
593 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 12 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M4.9 on June 14, 2019. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 4.0283 km E of Levuka, Fiji7y ago · 15 km S of this epicenter
- 4.4Fiji region7y ago · 26 km SE of this epicenter
- 4.1271 km E of Levuka, Fiji7y ago · 17 km W of this epicenter
- 4.9273 km E of Levuka, Fiji7y ago · 17 km SW of this epicenter
- 4.6284 km E of Levuka, Fiji7y ago · 5 km W of this epicenter
- 4.3280 km E of Levuka, Fiji7y ago · 36 km S of this epicenter
- 4.2246 km E of Levuka, Fiji7y ago · 46 km W of this epicenter
- 4.1242 km E of Levuka, Fiji7y ago · 46 km W of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 1,452 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.22018 Fiji EarthquakeAugust 19, 2018 · 39 km SW of this epicenter
- 7.945 km S of Levuka, FijiSeptember 6, 2018 · 293 km W of this epicenter
- 7.8Fiji regionJanuary 1, 1919 · 169 km S of this epicenter
- 7.6178 km E of Levuka, FijiFebruary 22, 1909 · 117 km W of this epicenter
- 7.6144 km SSW of Leava, Wallis and FutunaMay 23, 1956 · 278 km N of this epicenter
- 7.6240 km E of Levuka, FijiMarch 9, 1994 · 53 km SW of this epicenter
- 7.5262 km WNW of Haveluloto, TongaMay 21, 1962 · 259 km S of this epicenter
- 7.4227 km E of Levuka, FijiAugust 21, 1910 · 61 km W of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 10 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 · 266 km away · intensity VIII
Moderate damage ($1–5M)
- 1979M6.9
Fiji Islands
16 Nov 1979 · 243 km away
Moderate damage ($1–5M)tsunami
- 1932M6.4
Koro,Mudu,Suvasavu
8 Mar 1932 · 244 km away · intensity VII
Moderate damage ($1–5M)
- 2018M8.2
Fiji Islands
19 Aug 2018 · 39 km away · intensity V
tsunami
- 2018M7.9
Fiji Islands
6 Sep 2018 · 293 km away · intensity VII
- 1909M7.8
Fiji Islands
22 Feb 1909 · 111 km away
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.