M 5.5 in Mid-Indian Ridge on 06 Dec 2021 00:55 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: -27.7856 , 73.9785
Event Date: 06 Dec 2021 00:55 UTC
06 Dec 2021 05:55 Local
Exposed Population: No people affected in 100km
Source: NEIC us6000g9d9
Inserted at: 06 Dec 2021 19:43 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000g9d9 Scaled population (raster) 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
1414001 0 06 Dec 2021 00:55 5.4M, 10km N/A No people affected (in 100km) 00:20 NEIC
1414131 0 06 Dec 2021 00:55 5.5M, 10km N/A No people affected (in 100km) 18:48 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 unknowed a zone. The alertlevel for this event is GREEN

Intensity Population


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1414001 -27.789/74 5.4 10.0 None 06 Dec 2021 01:17 00:22 (new episode)
2 0 1414131 -27.789/74 5.4 10.0 None 06 Dec 2021 02:58 02:02 (new episode)
3 0 1414131 -27.786/73.978 5.5 10.0 None 06 Dec 2021 19:56 19:01 (upd of #2)
4 0 1414131 -27.786/73.978 5.5 10.0 None 07 Dec 2021 00:59 1d 00:03 (upd of #3)
5 0 1414131 -27.8/74.007 5.5 10.0 None 12 Dec 2021 07:40 6d 06:45 (upd of #4)

Affected Provinces



Critical infrastructure

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

More information

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