M 5.7 in Tonga from 22 Mar 2026 22:26 UTC to 22:26

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: 5.7M
Depth: 81.2 Km
Lat/Lon: -15.427 , -172.448
Event Date: 22 Mar 2026 22:26 UTC
22 Mar 2026 11:26 Local
Exposed Population:
Source: PTWC pt26081002
Inserted at: 22 Mar 2026 22:37 UTC
INFORM Coping capacity of the alert score
1.1 ()

GDACS Score

For more info on GDACS score click here.
  Earthquake
(Rapid Impact)		 GDACS score
PTWC 0 0
pt26081002 Scaled population (vector) 0  
  C1 rapid impact 0  
  C2 rapid impact 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
Maximum expected impact using different data sources.

Episode Timeline

IDLevelScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1694641 0 22 Mar 2026 22:26 5.7M, 81.2km 3.65 No people affected (in 100km) 00:10 PTWC
1694643 0 22 Mar 2026 22:26 5.9M, 10km 3.77 N/A (in MMI>=VII) 00:20 NEIC
1694651 0 22 Mar 2026 22:26 5.9M, 13km 3.79 N/A (in MMI>=VII) 00:56 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 no people
75 km no people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

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.