M 4.5 in Tonga Islands from 15 Sep 2022 03:44 UTC to 03:44

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: 4.5M
Depth: 236.436 Km
Lat/Lon: -18.6627 , -175.5293
Event Date: 15 Sep 2022 03:44 UTC
14 Sep 2022 15:44 Local
Exposed Population:
Few people affected in MMI -
Source: NEIC us7000i86t
Inserted at: 15 Sep 2022 04:06 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
us7000i86t Scaled population (vector) 0  
  C1 rapid impact -0.59  
  C2 rapid impact 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.94  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1462115 0 15 Sep 2022 03:44 4.5M, 236.436km 2.34 Few people (in 100km) 00:21 NEIC
1462235 0 15 Sep 2022 03:44 4.7M, 231.916km 2.54 Few people (in 100km) 18:00 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.