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 Tonga ,of Tonga (population 7,890) . The alertlevel for this event is GREEN

Intensity Population
<1000 people
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

Intensity Region Province Country Population
Tonga Tonga 7900 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Pangai Tonga Village 1700 people 147 km
Neiafu Tonga Village 4300 people 149 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
Haapai HPA 12 Civ. Unpaved Yes 3900 145 km

Ports

Intensity Name LOCODE Country Distance
Pangai TOPAN Tonga 146 km
Neiafu TONEI Tonga 150 km

More information

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