M 7.3 in Tonga Islands Region on 11 Nov 2022 10:48 UTC

Hazard models

Rapid Impact
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: 7.3M
Depth: 24.797 Km
Lat/Lon: -19.3181 , -172.1001
Event Date: 11 Nov 2022 10:48 UTC
10 Nov 2022 23:48 Local
Exposed Population:
Source: NEIC us7000ip0l
Inserted at: 11 Nov 2022 11:27 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0.1 0.1
us7000ip0l Scaled population (raster) 0 Max wave alert 0.19m  
  C1 shakemap -0.59 Max wave realtime 0.19m  
  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
1472551 0.2 11 Nov 2022 10:48 7.5M, 46km N/A 20 thousand (in 100km) 0.2m (at 01:10) 00:11 GEOFON
1472552 0.3 11 Nov 2022 10:48 7.5M, 33km 4.53 20 thousand (in 100km) 0.4m (at 00:22) 00:12 PTWC
1472553 0.2 11 Nov 2022 10:48 7.5M, 33km 4.5 20 thousand (in 100km) 0.1m (at 00:00) 00:17 NTWC
1472555 0.4 11 Nov 2022 10:48 7.1M, 10km 4.19 N/A (in MMI>=VII) 0.4m (at 00:22) 00:20 NEIC
1472561 0.1 11 Nov 2022 10:48 7.3M, 24.797km 4.22 N/A (in MMI>=VII) 0.2m (at 00:22) 00:38 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 12,748) . 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 1472561 -19.292/-172.129 7.1 10.0 4.19 11 Nov 2022 11:16 00:27 (new episode)
2 0 1472561 -19.318/-172.1 7.3 24.8 4.225 11 Nov 2022 11:30 00:42 (upd of #1)
3 0 1472561 -19.318/-172.1 7.3 24.8 4.225 11 Nov 2022 12:52 02:04 (upd of #2)
4 0 1472561 -19.318/-172.1 7.3 24.8 4.225 12 Nov 2022 11:40 1d 00:51 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Tonga Tonga 13000 people
Niue Niue 1300 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Neiafu Tonga Village 4300 people 212 km
Alofi Niue Capital <1000 people 231 km
Hakupu Niue Village <1000 people 238 km
Lakepa Niue Village <1000 people 244 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 212 km
Niue Hanan IUE 64 Civ. Paved Yes 7600 230 km

Ports

Intensity Name LOCODE Country Distance
Neiafu TONEI Tonga 211 km
Alofi Niue 231 km

More information

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