M 5.5 in Gabon on 04 Dec 2022 09:53 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: 5.5M
Depth: 3.623 Km
Lat/Lon: -1.0366 , 10.2177
Event Date: 04 Dec 2022 09:53 UTC
04 Dec 2022 10:53 Local
Exposed Population: Few people affected (in MMI>=VII)
Source: NEIC us6000j6u0
Inserted at: 04 Dec 2022 10:40 UTC
INFORM Coping capacity of the alert score: 6 (Gabon)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0.2 0.2
us6000j6u0 Scaled population (raster) 1.59  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1.11  
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
1476845 0 04 Dec 2022 09:53 5.5M, 10km 7.06 N/A (in MMI>=VII) 00:17 NEIC
1476848 0.2 04 Dec 2022 09:53 5.5M, 3.623km 7.06 514 (in MMI>=VII) 00:47 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 Gabon ,of Moyen-Ogooue (population 91,759) . The alertlevel for this event is GREEN

Intensity Population
<1000 people
1600 people
49000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1476845 10.221/-1.021 5.5 10 7.065 04 Dec 2022 10:15 00:22 (new episode)
2 0 1476848 10.218/-1.037 5.5 3.6 7.87 04 Dec 2022 10:43 00:50 (new episode)
3 0 1476848 10.218/-1.037 5.5 3.6 7.87 04 Dec 2022 12:00 02:07 (upd of #2)
4 0 1476848 10.218/-1.037 5.5 3.6 7.87 05 Dec 2022 10:40 1d 00:47 (upd of #3)
5 0.2 1476848 10.236/-1.014 5.5 10 7.065 13 Dec 2022 00:50 8d 14:57 (upd of #4)

Affected Provinces

Intensity Region Province Country Population
Moyen-Ogooue Gabon <1000 people
Moyen-Ogooue Gabon <1000 people
Ngounie Gabon no people
Moyen-Ogooue Gabon <1000 people
Ngounie Gabon no people
Ogooue-Maritime Gabon no people
Moyen-Ogooue Gabon 48000 people
Ngounie Gabon 10000 people
Ogooue-Maritime Gabon no people
Estuaire Gabon 7400 people
Ogooue-Lolo Gabon <1000 people
Nyanga Gabon <1000 people
Ogooue-Ivindo Gabon <1000 people
Woleu-Ntem Gabon no people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Azériba Moyen-Ogooue Gabon Village - 9 km
Ndjambalika Moyen-Ogooue Gabon Village - 22 km
Bigouenya Moyen-Ogooue Gabon Village - 27 km
Tchad Moyen-Ogooue Gabon Village - 28 km
Mayengue Moyen-Ogooue Gabon Village - 35 km
Lambaréné Moyen-Ogooue Gabon Village 19000 people 37 km
Elombé Moyen-Ogooue Gabon Village - 38 km
Otanda Moyen-Ogooue Gabon Village - 43 km
Fougamou Ngounie Gabon Village 5600 people 45 km
Mimbanda Ngounie Gabon Village - 45 km
Sindara Ngounie Gabon Village - 49 km
Iguendjo Moyen-Ogooue Gabon Village - 51 km
Yombi Ngounie Gabon Village - 61 km
Mabangui Ngounie Gabon Village - 179 km
Idimba Ogooue-Lolo Gabon Village - 188 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Lambarene LBQ 25 Civ. Unpaved No 7100 37 km
Fougamou FOU 80 Civ. Unpaved No 4900 53 km

More information

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