On the 10th of May 2023 at 16:21:53 UTC, a magnitude M2.4 earthquake occurred near the Goban Spur, in the Porcupine region of the North Atlantic ocean, locating approximately 350km south-south-west off the coast of Kerry. The earthquake occurred at a depth of 10 km. The location of the epicentre is indicated with a red circle in the map below. While earthquakes are known to occur in this region, it is not often that they are detected. As almost all seismometers are land-based, only larger magnitude events (M > 2) are seen from this region. Several earthquakes of similar magnitudes (between M2.0 and M4.4) have been detected in this region since 1980. Previously, the most recent earthquake detected from this area occurred on 2022-03-10 (M3.4, in the Porcupine Abyssal Plain), and the largest earthquake detected (since 1980) in the Porcupine region was M4.4, occurring on the 17th of February 1980.
The event was recorded by the Irish National Seismic Network (INSN) and can be seen in the waveforms plotted below:
