M 5.5 in Mayotte on 21 May 2018 00:47 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

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: 10 Km
Lat/Lon: -12.8769 , 45.6842
Event Date: 21 May 2018 00:47 UTC
21 May 2018 03:47 Local
Exposed Population: 210000 people within 100km
Source: NEIC us1000e952
Inserted at: 21 May 2018 01:32 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us1000e952 Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1211352 0 21 May 2018 00:47 5.5M, 10km 4.02 N/A (in MMI>=VII) 00:22 NEIC
1211356 0 21 May 2018 00:47 5.5M, 10km 4.5 N/A (in MMI>=VII) 00:44 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* 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 Mayotte , of Mayotte. The nearest places are Dzaoudzi, Mamoudzou, Bandele, Dembeni, Longoni, Dapani, Chingoni, Sada, Cani, Dzoumogne, and Moliha.

Radius Population
100 km 220000 people
75 km 220000 people
50 km 30000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Mayotte Mayotte -
Comoros Comoros -
Glorioso Is. Miscellaneous (French) Indian Ocean Islands -
Antsiranana Madagascar 820000 people
Mahajanga Madagascar 1.4 million people
Seychelles Seychelles 73000 people
Toamasina Madagascar 1.8 million people

Affected populated places

Name Region Province Country City class Population Distance
Dzaoudzi Mayotte Village 14000 people 46 km
Mamoudzou Mayotte Capital 55000 people 54 km
Bandele Mayotte Village - 56 km
Dembeni Mayotte Village 7300 people 56 km
Longoni Mayotte Village - 57 km
Dapani Mayotte Village - 59 km
Chingoni Mayotte Village - 63 km
Sada Mayotte Village 9600 people 64 km
Cani Mayotte Village - 65 km
Dzoumogne Mayotte Village - 66 km
Moliha Mayotte Village - 68 km

see full list

Critical infrastructure

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

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Dzaoudzi Pamanzi DZA 8 Civ. Paved Yes 6000 46 km

Ports

Name LOCODE Country Distance
Zaudzi Mayotte 48 km
Dzaoudzi YTDZA Mayotte 53 km

More information

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