M 4.6 in Tonga Islands on 26 May 2022 00:05 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: 4.6M
Depth: 112.11 Km
Lat/Lon: -15.9498 , -173.7948
Event Date: 26 May 2022 00:05 UTC
26 May 2022 13:05 Local
Exposed Population:
1 thousand in 100km
Source: NEIC us7000hcjg
Inserted at: 26 May 2022 00:30 UTC
INFORM Coping capacity of the alert score
1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 GDACS score
NEIC 0 0
us7000hcjg Scaled population (vector) 0  
  C1 rapid impact -0.59  
  C2 rapid impact 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
1445186 0 26 May 2022 00:05 4.6M, 112.11km 3.5 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 1100 people
20 km 1100 people
10 km <1000 people
5 km <1000 people
2 km <1000 people

Affected Provinces

Affected populated places

Name Region Province Country City class Population Distance
Hihifo Tonga Village <1000 people 5 km
Falehau Tonga Village - 7 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.