M 5.5 in Svalbard and Jan Mayen on 23 Jul 2021 04:05 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: 79.6888 , 3.6697
Event Date: 23 Jul 2021 04:05 UTC
23 Jul 2021 04:05 Local
Exposed Population: No people within 100km
Source: NEIC us6000ey6s
Inserted at: 23 Jul 2021 04:52 UTC
INFORM Coping capacity of the alert score: 1.1 (Jan Mayen)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000ey6s 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
1387068 0 23 Jul 2021 04:05 5M, 10km N/A No people affected (in 100km) 00:19 NEIC
1387071 0 23 Jul 2021 04:05 5.5M, 10km 3.16 N/A (in MMI>=VII) 00:46 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
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1387071 79.689/3.67 5.5 10.0 3.158 23 Jul 2021 04:56 00:50 (new episode)
2 0 1387071 79.689/3.649 5.5 10.0 3.156 23 Jul 2021 05:37 01:31 (upd of #1)
3 0 1387071 79.689/3.649 5.5 10.0 3.156 23 Jul 2021 06:41 02:35 (upd of #2)
4 0 1387071 79.689/3.649 5.5 10.0 3.156 24 Jul 2021 04:11 1d 00:05 (upd of #3)

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.