Ballymun tremors as east coast of Ireland is shaken by an earthquake.

Geophysicists at the Dublin Institute for Advanced Studies (DIAS) recorded a massive ground movement deep below the Irish sea using sensitive seismic monitoring equipment. The epicentre of the quake was about 10 miles off the coast of Anglesa in Wales and measured over 5.5 on the Richter scale.

Seismologist with the DIAS School of Cosmic Physics Dr Brian Jacob says because the earthquake occurred under the sea,

This is what possibly what saved people from suffering more damage, in other words nobody was really close to it.

The quake was felt along the east coast of Ireland and as far inland as County Kildare and lasted up to 30 seconds. It was followed by a series of aftershocks.

Residents in the Ballymun flats felt the towers shake beneath them. Two women describe feeling their beds shaking at around a quarter to eight in the morning.

I got a fright I didn’t know what it was.

An RTÉ News report broadcast on 19 July 1984. The reporter is Alan McCullough.