Reviewed by USGSVanuatu7y ago
M4.9 earthquake 193 km SSE of Isangel, Vanuatu
Wednesday, May 29, 2019, 18:33:27 UTC · 21.103°S, 170.118°E
A magnitude 4.9 earthquake struck 193 km SSE of Isangel, Vanuatu on Wednesday, May 29, 2019, 18:33:27 UTC, at a depth of 78.1 km (intermediate). It is the strongest earthquake within 300 km since an M5.7 on May 25, 2019.
- Magnitude
- 4.9
- Light · mb
- Depth
- 78 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
338 tons of TNT
That is about 1/45 of the Hiroshima bomb. A magnitude 5.0 releases about 1 times more energy.
Tectonic setting
116 km
from the nearest mapped plate boundary, between the New Hebrides and Australian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: intermediate
78 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 1,801 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.11920 Vanuatu EarthquakeSeptember 20, 1920 · 211 km NW of this epicenter
- 7.828 km ESE of Isangel, VanuatuJune 16, 1910 · 177 km N of this epicenter
- 7.7249 km E of Vao, New CaledoniaMay 16, 1995 · 213 km S of this epicenter
- 7.663 km NW of Isangel, VanuatuOctober 14, 1913 · 257 km NW of this epicenter
- 7.6274 km ESE of Tadine, New CaledoniaMarch 16, 1928 · 143 km S of this epicenter
- 7.5southeast of the Loyalty IslandsJanuary 4, 1998 · 156 km SE of this epicenter
- 7.5166 km ESE of Tadine, New CaledoniaDecember 5, 2018 · 118 km SW 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 26 recorded deaths. The most severe:
- 1875M8.1
Loyalty Islands: Lifou Island
28 Mar 1875 · 208 km away
26 deathsSevere damage ($5–24M)tsunami
- 1901M7.9
Loyalty Islands
9 Aug 1901 · 101 km away
Moderate damage ($1–5M)tsunami
- 1920M8.1
Loyalty Islands
20 Sep 1920 · 211 km away
Limited damage (under $1M)tsunami
- 1878M7.5
Tanna Island
10 Jan 1878 · 289 km away
Limited damage (under $1M)tsunami
- 2018M7.5
Loyalty Islands
5 Dec 2018 · 118 km away · intensity III
Limited damage (under $1M)tsunami
- 2010M7.3
Vanuatu Islands
25 Dec 2010 · 275 km away
Limited damage (under $1M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.