M 6.6 in Tonga on 04 Nov 2019 22:43 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: 6.6M
Depth: 10 Km
Lat/Lon: -18.573 , -175.27
Event Date: 04 Nov 2019 22:43 UTC
04 Nov 2019 10:43 Local
Exposed Population: Few people within 100km
Source: NEIC us7000635e
Inserted at: 05 Nov 2019 06:25 UTC
INFORM Coping capacity of the alert score: 1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0 0
us7000635e Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  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
1277155 0.1 04 Nov 2019 22:43 6.9M, 10km N/A Few people (in 100km) 0.1m (at 01:06) 00:09 PTWC
1277157 0.2 04 Nov 2019 22:43 6.9M, 10km N/A Few people (in 100km) 0.2m (at 01:04) 00:11 NTWC
1277160 0 04 Nov 2019 22:43 6.6M, 13.37km 4.4 N/A (in MMI>=VII) 0m (at 00:00) 02:05 NEIC
1277208 0 04 Nov 2019 22:43 6.6M, 10km 4.31 N/A (in MMI>=VII) 0m (at 00:00) 07:41 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 13,600) . The alertlevel for this event is GREEN

Intensity Population
no people
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1277160 -18.574/-175.249 6.6 13.4 4.099 04 Nov 2019 23:12 00:29 (new episode)
2 0 1277160 -18.574/-175.249 6.6 13.4 4.403 05 Nov 2019 00:48 02:05 (upd of #1)
3 0 1277208 -18.574/-175.249 6.6 13.4 4.403 05 Nov 2019 06:20 07:37 (new episode)
4 0 1277208 -18.573/-175.27 6.6 10.0 4.313 05 Nov 2019 06:25 07:41 (upd of #3)
5 0 1277208 -18.573/-175.27 6.6 10.0 4.313 05 Nov 2019 22:52 1d 00:09 (upd of #4)

Affected Provinces

Intensity Region Province Country Population
Tonga Tonga 14000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Neiafu Tonga Village 4300 people 136 km
Pangai Tonga Village 1700 people 168 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
Vavau International VAV 72 Civ. Unpaved Yes 5500 138 km
Haapai HPA 12 Civ. Unpaved Yes 3900 165 km

Ports

Intensity Name LOCODE Country Distance
Neiafu TONEI Tonga 137 km
Pangai TOPAN Tonga 166 km

More information

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