M 6.9 in Central Mid-Atlantic Ridge on 04 Sep 2022 09:42 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: 6.9M
Depth: 10 Km
Lat/Lon: -0.9499 , -21.7246
Event Date: 04 Sep 2022 09:42 UTC
04 Sep 2022 08:42 Local
Exposed Population:
Source: NEIC us7000i53f
Inserted at: 04 Sep 2022 10:30 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0 0
us7000i53f Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 1      
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1460075 0 04 Sep 2022 09:42 6.5M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:24 NEIC
1460077 0 04 Sep 2022 09:42 6.9M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:48 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 unknowed a zone. The alertlevel for this event is GREEN

Intensity Population


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1460077 -0.937/-21.719 6.5 10.0 None 04 Sep 2022 10:08 00:26 (new episode)
2 0 1460077 -0.95/-21.725 6.9 10.0 None 04 Sep 2022 10:31 00:49 (upd of #1)
3 0 1460077 -0.95/-21.725 6.9 10.0 None 04 Sep 2022 11:46 02:04 (upd of #2)
4 0 1460077 -0.95/-21.725 6.9 10.0 None 05 Sep 2022 10:40 1d 00:58 (upd of #3)
5 0 1460077 -0.934/-21.716 6.9 10.0 None 13 Sep 2022 23:50 9d 14:08 (upd of #4)

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.