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.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


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 (population 54,369) . The alertlevel for this event is GREEN

Intensity Population
no people
980000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1211352 -12.858/45.618 5.5 10 4.02 21 May 2018 01:12 00:25 (new episode)
2 0 1211356 -12.858/45.618 5.5 10 4.02 21 May 2018 01:32 00:45 (new episode)
3 0 1211356 -12.877/45.684 5.5 10 4.42 21 May 2018 01:34 00:46 (upd of #2)
4 0 1211356 -12.877/45.684 5.5 10 4.5 21 May 2018 02:50 02:03 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Mayotte Mayotte 120000 people
Mayotte Mayotte 57000 people
Comoros Comoros 270000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Dzaoudzi Mayotte Village 14000 people 45 km
Mamoudzou Mayotte Capital 55000 people 52 km
Bandele Mayotte Village - 55 km
Longoni Mayotte Village - 55 km
Chingoni Mayotte Village - 61 km
Dapani Mayotte Village - 57 km
Sada Mayotte Village 9600 people 63 km
Cani Mayotte Village - 64 km
Dzoumogne Mayotte Village - 65 km
Moliha Mayotte Village - 66 km
Accua Mayotte Village - 71 km
M'Remani Comoros Village - 144 km
Bambao Comoros Village - 148 km
Moya Comoros Village 7400 people 149 km
Matsamudu Comoros Village - 158 km
Ouani Comoros Village 10000 people 159 km
Mutsamudu Comoros Village 23000 people 160 km
Sima Comoros Village 10000 people 171 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Dzaoudzi Pamanzi DZA 8 Civ. Paved Yes 6000 45 km
Anjouan Ouani AJN 19 Civ. Paved No 4400 159 km

Ports

Intensity Name LOCODE Country Distance
Zaudzi Mayotte 46 km
Dzaoudzi YTDZA Mayotte 52 km
Pomoni Comoros 154 km
Patsi Comoros 160 km
Mutsamudu Comoros 161 km

More information

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