M4.9 earthquake 24 km E of Port-Olry, Vanuatu
A magnitude 4.9 earthquake struck 24 km E of Port-Olry, Vanuatu on Wed, Mar 28, 1973, 6:55 AM GMT+11 (19:55 UTC), 135 km (84 mi) below the surface.
A larger quake followed: M6.4 29 km SSE of Luganville, Vanuatu. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1973-03-27 19:55:27 UTC
- Depth
- 135.0 km (83.9 mi), intermediate-depth
- Epicenter
- 15.008° S, 167.296° E
- Region
- Vanuatu
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Stations used
- 30
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 6.429 km SSE of Luganville, Vanuatu · 19525 days ago · 35 km deep · 86 km away
- 5.323 km NNW of Norsup, Vanuatu · 19512 days ago · 33 km deep · 97 km away
- 5.260 km NE of Norsup, Vanuatu · 19496 days ago · 153 km deep · 98 km away
Before
Earthquakes todayVanuatu earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000142. Read Tue, Sep 22, 2026, 12:14 PM UTC.