M 7.5 in Tonga Islands Region from 11 Nov 2022 10:48 UTC to 10:48

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: 7.5M
Depth: 33 Km
Lat/Lon: -19.322 , -172.016
Event Date: 11 Nov 2022 10:48 UTC
10 Nov 2022 23:48 Local
Exposed Population: 20 thousand in MMI&>=IV
Source: PTWC pt22315000
Inserted at: 11 Nov 2022 11:01 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 Tsunami GDACS score
PTWC 0 0.3 0.3
pt22315000 Scaled population (raster) 0 Max wave alert 0.35m  
  C1 rapid impact 0 Max wave realtime 0.35m  
  C2 rapid impact 0      
  Country Vulnerability 0      
  INFORM_normalised 0      
Maximum expected impact using different data sources.

The green area correspond to areas affected by strong shaking (MMI VI or higher) according to the simulation.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1472551 0 11 Nov 2022 10:48 7.5M, 46km 4.89 N/A (in MMI>=VII) 0.2m (at 01:10) 00:11 GEOFON
1472552 0 11 Nov 2022 10:48 7.5M, 33km 4.53 N/A (in MMI>=VII) 0.4m (at 00:22) 00:12 PTWC
1472553 0 11 Nov 2022 10:48 7.5M, 33km 4.5 N/A (in MMI>=VII) 0.1m (at 00:00) 00:17 NTWC
1472555 0 11 Nov 2022 10:48 7.1M, 10km 4.13 N/A (in MMI>=VII) 0.4m (at 00:22) 00:20 NEIC
1472561 0 11 Nov 2022 10:48 7.3M, 24.797km 6.65 N/A (in MMI>=VII) 0.2m (at 00:22) 00:38 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.

Rapid Impact

The results presented below are calculated with the ShakeMap open source software (USGS) using only earthquake hypocenter information to provide a rapid estimation of the ground motion and shaking intensity without taking into account any instrumental observations or earthquake source scaling laws.

Exposed population

The earthquake happened in unknowed a zone. The alertlevel for this event is GREEN

Intensity Population
<1000 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.