M 5.8 in Tonga Islands on 19 May 2022 09:23 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: 5.8M
Depth: 113 Km
Lat/Lon: -16.2914 , -173.8381
Event Date: 19 May 2022 09:23 UTC
18 May 2022 21:23 Local
Exposed Population: 1 thousand in 100km
Source: NEIC us6000hm95
Inserted at: 19 May 2022 09:48 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000hm95 Scaled population (vector) 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
1444018 0 19 May 2022 09:23 6M, 149.6km 4.22 1 thousand (in 100km) 00:12 PTWC
1444020 0 19 May 2022 09:23 5.8M, 113km 4.3 1 thousand (in 100km) 00:24 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


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1444020 -16.291/-173.838 5.8 113.0 4.297 19 May 2022 09:49 00:25 (new episode)
2 0 1444020 -16.291/-173.838 5.8 113.0 4.297 19 May 2022 09:56 00:32 (upd of #1)
3 0 1444020 -16.291/-173.838 5.8 113.0 4.297 19 May 2022 11:28 02:04 (upd of #2)
4 0 1444020 -16.291/-173.838 5.8 113.0 4.297 20 May 2022 09:40 1d 00:16 (upd of #3)

Affected Provinces


Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Hihifo Tonga Village <1000 people 37 km
Falehau Tonga Village - 40 km

see full list


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.