M 5.5 in Vanuatu on 22 Jul 2018 21:21 UTC
EQ parameters

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 5.5M
Depth: 99.82 Km
Lat/Lon: -18.9336 , 168.9131
Event Date: 22 Jul 2018 21:21 UTC
Exposed Population: About 36000 people within 100km
Source: NEIC us2000gbew
Inserted at: 22 Jul 2018 21:37 UTC
INFORM Coping capacity of the alert score: 6.1 (Vanuatu)


For more info on GDACS alert score click here.
GDACS score
NEIC 0 0
us2000gbew Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1.12  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1220801 0 22 Jul 2018 21:21 5.5M, 99.82km 3.93 40 thousand 00:15 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Vanuatu , of Vanuatu (population 165,000) . The nearest places are Unpongkor, Happy Land, Navolou, Umpon Mompu, Yawisaghuwi, Potnarvin, Rampunalvat, Ipota, Ifo, Loounémeloupang, and Iléreup.

Radius Population
100 km 36000 people
75 km 16000 people
50 km 4300 people
20 km 1500 people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Vanuatu Vanuatu 160000 people

Affected populated places

Name Region Province Country City class Population Distance
Unpongkor Vanuatu Village5 - 17 km
Happy Land Vanuatu Village5 - 19 km
Navolou Vanuatu Village5 - 22 km
Umpon Mompu Vanuatu Village5 - 27 km
Yawisaghuwi Vanuatu Village5 - 34 km
Potnarvin Vanuatu Village5 - 37 km
Rampunalvat Vanuatu Village5 - 37 km
Ipota Vanuatu Village5 - 40 km
Ifo Vanuatu Village5 - 44 km
Loounémeloupang Vanuatu Village5 - 60 km
Loounimhapeun Vanuatu Village5 - 61 km
Lownepina Vanuatu Village5 - 64 km
Laounalang Vanuatu Village5 - 64 km
Iléreup Vanuatu Village5 - 68 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Dillons Bay DLY unknown 0 20 km
Ipota IPA unknown 0 40 km
White Grass 6 Civ. Paved Yes 5000 66 km
Tanna Island Tanna TAH unknown 0 66 km
Aniwa AWD unknown 0 80 km


Name LOCODE Country Distance
Tana Island Vanuatu 76 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.