 The Pyrenees and Catalonia have frequent and sometimes destructive earthquakes — the largest in recorded history being the Catalan earthquake of 1428 with an estimated magnitude of IX on the MSK scale, equivalent to 6.0–6.5 on the Richter magnitude scale.However, earthquakes whose epicentres are inside Andorra tend to be smaller than magnitude 2.An earthquake of magnitude 4.2 on 5 October 1999 in nearby Bagnères-de-Luchon (France) was widely felt in Andorra, causing public alarm.