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Moderate mag. 4.8 earthquake - 41 km south of Lambarene, Moyen-Ogooué, Gabon, on 27 Apr 1:40 am (GMT +1)

Moderate mag. 4.8 earthquake - 41 km south of Lambarene, Moyen-Ogooué, Gabon, on 27 Apr 1:40 am (GMT +1) Moderate mag. 4.8 earthquake - 41 km south of Lambarene, Moyen-Ogooué, Gabon, on 27 Apr 1:40 am (GMT +1)

Moderate magnitude 4.8 earthquake at 10 km depth

27 Apr 00:53 UTC: First to report: GFZ after 13 minutes.
27 Apr 07:50: Epicenter location corrected by 12 km (7.2 mi) towards SSW.
Update Tue, 27 Apr 2021, 00:57

Magnitude 4.8 earthquake strikes near Lambarene, Moyen-Ogooué, Gabon

4.8 quake 27 Apr 1:40 am (GMT +1)
4.8 quake 27 Apr 1:40 am (GMT +1)
Just 16 minutes ago, a 4.8-magnitude earthquake struck near Lambarene, Moyen-Ogooué, Gabon. The tremor was recorded early morning on Tuesday 27 April 2021 at 1:40 am local time, at a shallow depth of 10 km below the surface.
The event was filed by the German Research Centre for Geosciences (GFZ), the first seismological agency to report it.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.8 as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Lambarene (pop. 20,700) located 29 km from the epicenter, and Fougamou (pop. 5,600) 51 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ndjolé (pop. 5,100) located 107 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Earthquake details

Date & timeApr 27, 2021 00:40:56 UTC
Local time at epicenter27 Apr 1:40 am (GMT +1)
Depth10.0 km
Epicenter latitude / longitude1.06°S / 10.17°E (Moyen-Ogooué, Gabon)
Antipode1.06°N / 169.83°W
Shaking intensityLight shaking
Felt2 reports
Primary data sourceGFZ (German Research Centre for Geosciences)
Nearby towns and cities41 km (25 mi) S of Lambarene (pop: 20,700) | Show on map | Quakes nearby
49 km (31 mi) WNW of Fougamou (Ngouni) (pop: 5,650) | Show on map | Quakes nearby
118 km (74 mi) SW of Ndjolé (pop: 5,100) | Show on map | Quakes nearby
133 km (83 mi) NW of Mouila (Ngouni) (pop: 22,500) | Show on map | Quakes nearby
159 km (99 mi) ESE of Port Gentil (Ogooué-Maritime) (pop: 109,200) | Show on map | Quakes nearby
180 km (112 mi) SSE of Libreville (Estuaire) (pop: 578,200) | Show on map | Quakes nearby
227 km (141 mi) NNW of Tchibanga (Nyanga) (pop: 19,400) | Show on map | Quakes nearby
255 km (159 mi) W of Koulamoutou (Ogooué-Lolo) (pop: 16,200) | Show on map | Quakes nearby
335 km (208 mi) SSW of Oyem (Woleu-Ntem) (pop: 30,900) | Show on map | Quakes nearby
413 km (257 mi) ESE of San Tomas (São Tomé, São Tomé & Príncipe) (pop: 53,300) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 24.1°C (75 F), humidity: 96%, wind: 1 m/s (2 kts) from SSW
Estimated seismic energy released1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) | about seismic energy
Show interactive Map
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
4.810 kmGabonGFZ
4.710 km40 Km S of Lambaréné, GabonUSGS

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Libreville city Owendo south of Libreville by sea (170.8 km NNW of epicenter) [Map] / not felt : I live in Owendo, south of Libreville, about 200km from Lambar | One user found this interesting.  
Lambaréné, ancien hôpital (40.1 km N of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Allongé et légèrement endormi sur mon lit, j'ai ressenti mon lit et le sol trembler | One user found this interesting.  
Lambaréné, dans la zone du lac Ezanga sur le cha / Weak shaking (MMI III) / complex rolling (tilting in multiple directions) / 5-10 s : J'ai ressenti une vibration dans tous les sens etant sur le lit quand cela s'est produit. le lit a bougé dans toutes les direction et l'onde de s'est éloignée au four et a mesure suivant la durée.  

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