Moderate mag. 4.0 earthquake - 19 km southeast of Boulogne-sur-Mer, Pas-de-Calais, Hauts-de-France, on Saturday, December 14, 1991 at 13:30 (GMT)
Quake Data | Interactive map | User Reports | Earlier quakes here | Quakes in France | Hauts-de-France | Île-de-France
Moderate magnitude 4.0 earthquake at 10 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 10.0 km
Epicenter latitude / longitude: 50.626°N / 1.827°E↗ (Pas-de-Calais, Hauts-de-France, France)
Antipode: 50.626°S / 178.173°W↗
Nearby towns and cities:
2 km (2 mi) SSW of Courset (pop: 585) --> See nearby quakes!
19 km (12 mi) SE of Boulogne-sur-Mer (pop: 47,000) --> See nearby quakes!
30 km (19 mi) NNE of Berck (pop: 15,600) --> See nearby quakes!
33 km (21 mi) WSW of Saint-Omer (pop: 18,300) --> See nearby quakes!
36 km (23 mi) S of Calais (pop: 74,400) --> See nearby quakes!
51 km (32 mi) WSW of Hazebrouck (pop: 23,300) --> See nearby quakes!
58 km (36 mi) W of Béthune (pop: 31,600) --> See nearby quakes!
60 km (37 mi) SW of Dunkerque (pop: 71,300) --> See nearby quakes!
87 km (54 mi) W of Lille (pop: 228,300) --> See nearby quakes!
201 km (125 mi) N of Paris (Île-de-France) (pop: 2,138,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) More info
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.
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.