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Mayo was “All Shook Up” on Wednesday morning when an off-shore earthquake was felt across large parts of the west and north of the county. The quake which registered four on the Richter Scale, was the second-largest earthquake recorded in either Ireland or Britain after a 5.4 magnitude earthquake in 1984. Wednesday’s off-shore ‘quake was recorded 60km west of Belmullet at a depth of 3km, shortly before 9am. The tremors from the quake were felt well inland, with numerous members of the public reporting objects moving and shaking in homes and others describing the sensation of the earthquake as like a large truck passing very close by.