M 4.5 in Tonga from 28 Mar 2022 00:47 UTC to 00:47

Hazard models

EQ parameters
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: 4.5M
Depth: 322.4 Km
Lat/Lon: -22.6184 , -177.0815
Event Date: 28 Mar 2022 00:47 UTC
27 Mar 2022 12:47 Local
Exposed Population:
No people affected in 100km
Source: NEIC us7000gxrx
Inserted at: 28 Mar 2022 01:10 UTC
INFORM Coping capacity of the alert score
1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000gxrx Scaled population (vector) 0  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1433954 0 28 Mar 2022 00:47 4.5M, 322.4km N/A No people affected (in 100km) 00:23 NEIC
1433973 0 28 Mar 2022 00:47 4.6M, 298.95km N/A No people affected (in 100km) 01:58 NEIC
1434839 0 28 Mar 2022 00:47 4.6M, 328.03km N/A No people affected (in 100km) 4d 20:41 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 98,000) .

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

Region Province Country Population
Tonga Tonga 98000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Ports

Name LOCODE Country Distance
Ata Island Tonga 96 km

More information

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