M 6.1 in Tonga on 11 Nov 2019 23:03 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: 6.1M
Depth: 10 Km
Lat/Lon: -18.9038 , -175.3695
Event Date: 11 Nov 2019 23:03 UTC
11 Nov 2019 11:03 Local
Exposed Population: Less then 100 people in MMI V
Few people within 100km
Source: NEIC us60006adv
Inserted at: 12 Nov 2019 03:01 UTC
INFORM Coping capacity of the alert score: 1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us60006adv 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
1278275 0 11 Nov 2019 23:03 6.1M, 10km 4.42 N/A (in MMI>=VII) 03:58 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 1278275 -18.904/-175.37 6.1 10.0 3.791 11 Nov 2019 23:25 00:22 (new episode)
2 0 1278275 -18.904/-175.37 6.1 10.0 4.418 12 Nov 2019 01:07 02:04 (upd of #1)
3 0 1278275 -18.886/-175.36 6.1 10.0 4.415 12 Nov 2019 03:01 03:58 (upd of #2)
4 0 1278275 -18.886/-175.36 6.1 10.0 4.415 12 Nov 2019 23:06 1d 00:03 (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.