Small earthquake hits northeast of Letterkenny overnight
Donegal was struck by a small 0.9 magnitude earthquake at 2.35am this morning, according to the Irish National Seismic Network.
The earthquake which occurred 12km northeast of Letterkenny and approximately 1km beneath Lough Swilly may have gone unnoticed by many. In the map above the epicentre of the earthquake is indicated with a red marker. Earthquakes with magnitudes of up to M2.5 are commonly detected in Donegal - the most recent earthquake detected in this region was M0.6 on June 22.
The largest onshore Irish earthquake recorded by the INSN was M2.5, occurring on January 26, 2012 on the Fanad Peninsula.