M 7.1 in Tonga Islands Region on 11 Nov 2022 10:48 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: 7.1M
Depth: 10 Km
Event Date: 11 Nov 2022 10:48 UTC
10 Nov 2022 23:48 Local
Exposed Population: 20 thousand in MMI IV
Source: NEIC us7000ip0l
Inserted at: 11 Nov 2022 11:09 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
NEIC 0 0.4 0.4
us7000ip0l Scaled population (raster) 0 Max wave alert 0.42m  
  C1 rapid impact 0 Max wave realtime 0.42m  
  C2 rapid impact 0      
  Country Vulnerability 0      
  INFORM_normalised 0      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1472551 0.2 11 Nov 2022 10:48 7.5M, 46km N/A 20 thousand (in 100km) 0.2m (at 01:10) 00:11 GEOFON
1472552 0.3 11 Nov 2022 10:48 7.5M, 33km 4.53 20 thousand (in 100km) 0.4m (at 00:22) 00:12 PTWC
1472553 0.2 11 Nov 2022 10:48 7.5M, 33km 4.5 20 thousand (in 100km) 0.1m (at 00:00) 00:17 NTWC
1472555 0.4 11 Nov 2022 10:48 7.1M, 10km 4.19 N/A (in MMI>=VII) 0.4m (at 00:22) 00:20 NEIC
1472561 0.1 11 Nov 2022 10:48 7.3M, 24.797km 4.22 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.

Tsunami affected locations

The maximum Wave height is  0.4m in Alofi, Niue. This height is estimated for 11-Nov-2022 11:10:62.

Alert Date (UTC) Name Country Wave height (m)
11-Nov-2022 11:10:62 Alofi Niue  0.4
11-Nov-2022 11:14:76 Hakupu Niue  0.4
11-Nov-2022 11:08:93 Avatele Niue  0.4
11-Nov-2022 12:02:45 Falehau Tonga  0.2
11-Nov-2022 11:46:95 Hihifo Tonga  0.2
11-Nov-2022 11:12:16 Liku Niue  0.2
11-Nov-2022 11:10:55 Mutalau Niue  0.1
11-Nov-2022 11:10:55 Lakepa Niue  0.1
11-Nov-2022 11:48:33 Kolonga Tonga  0.1
11-Nov-2022 12:20:02 Ohonua Tonga  0.1
11-Nov-2022 11:49:87 Mua Tonga  0.1
11-Nov-2022 11:49:87 Fatumu Tonga  0.1
11-Nov-2022 12:03:96 Fuaamotu Tonga  0.1
11-Nov-2022 12:26:38 Foui Tonga  0.1
11-Nov-2022 12:26:38 Nukunuku Tonga  0.1

See full locations list (RSS)


Initial conditions

Title: ""M 7.1, 207 km ESE of Neiafu, Tonga""

Fault parameters

  • Latitude: -19.292
  • Longitude: -172.129
  • Length: 56 km
  • Width: 15 km
  • Magnitude: 7.1 M

Okada parameters:

  • Slip: 1.5 m
  • Strike: 193 (geogr angle: north=0, south=180)
  • Dip: 19 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -176.629, -23.792, -167.629, -14.792
  • Instead of Step -> use Cell size:.75 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

  • Montecarlo:
    Tsunami Montecarlo simulation performed to this case, click here

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