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.

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 off shore.

Radius Population
100 km 1100 people
75 km 1100 people
50 km <1000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Affected populated places

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.