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2020-02-13, M0.9, Irish Sea

A magnitude M0.9 earthquake occurred on the 13th February 2020 at 19:13:01 GMT in the Irish Sea, about 25km east of Wicklow town. The epicentre location is shown in the map below. The location is in the same area in which a magnitude M2.8 earthquake nucleated on the 14th December 2005, an event that was felt by many people along the East coast of Ireland. Black lines in the map denote major fault zones in and around Ireland.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, for seismograms see the plot below (click image to enlarge).

2020-02-05, M1.0, Irish Sea

A magnitude M1.0 earthquake occurred on the 5th February 2020 at 17:38:34 GMT in the Irish Sea, about 50km east of Arklow. The epicentre location is shown in the map below, black lines denote major fault zones in and around Ireland.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, for seismograms see the plot below (click image to enlarge).

2020-01-29, M1.0, Offshore Antrim

On the 29th January 2020 at 07:27:40 GMT a magnitude M1.0 earthquake occurred offshore Co. Antrim, Northern Ireland. The earthquake located close to the epicentres of the M0.9 earthquake, 26th January 2020 and the M1.6 earthquake, 18th of December 2019. In the map below the epicentre of the M1.0 earthquake is indicated with a red marker. Major fault zones in and around Ireland are shown with black lines.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, for seismograms see the plot below (click image to enlarge).

 

2020-01-26, M0.9, Offshore Antrim

On the 26th January 2020 at 22:27:19 GMT a M0.9 earthquake occurred offshore Co. Antrim, Northern Ireland. The earthquake located approximately 10km east of both Ballycastle and Rathlin Island, very close to the location of the M1.6 earthquake that occurred on the 18th of December 2019 at 20:22:14 GMT.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, and can be seen in the waveforms plotted below:

2019-12-20, M1.4, Irish Sea

On the 20th of December 2019 at 09:53:44 local time, a M1.4 earthquake occurred in the Irish Sea approximately 90km north-east of Dublin and 40km south of the Isle of Man. The epicentre location is shown in the map below. This event follows a M2.5 earthquake in the Irish Sea from the 15th of December 2019. The M1.4 earthquake is most likely an aftershock of the recent M2.5 earthquake.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, and can be seen in the waveforms plotted below:

2019-12-18, M1.6, Offshore Antrim

On the 18th of December 2019 at 20:22:14 UTC, a M1.6 earthquake occurred offshore Co. Antrim, Northern Ireland. The earthquake located approximately 10km east of both Ballycastle and Rathlin Island, and at a depth of 1km. Since 2010, the Irish National Seismic Network (INSN) has previously recorded 5 earthquakes off the Antrim Coast, the largest of which was an M1.6 earthquake occurring on the 26th of October 2013.

The event was recorded by the Irish National Seismic Network (INSN) and British Geological Survey (BGS) seismometers, and can be seen in the waveforms plotted below:

The INSN is operated by the Dublin Institute for Advanced Studies (DIAS) in co-operation with the Geological Survey Ireland (GSI).

2019-12-15, M2.5, Irish Sea

On the 15th of December 2019 at 21:19:52 local time, a M2.5 earthquake occurred in the Irish Sea approximately 90km north-east of Dublin and 40km south of the Isle of Man. The epicentre location is shown in the map below. Events of this nature are not uncommon in the Irish Sea, a similar smaller event occurred on the 17th of November 2019. There has also been a subsequent M1.7 event at 06:23:55 on the 16th December off the English coast North of Blackpool (see map at bottom of page).

Location of M2.5 event on the 15th December 2019.

There have been no reports that the earthquake was felt onshore but the event was recorded by the Irish National Seismic Network (INSN) seismometers, and can be seen in the waveforms plotted below.

The INSN is operated by the Dublin Institute for Advanced Studies (DIAS) in co-operation with the Geological Survey Ireland (GSI).

 

Location of M1.7 Irish Sea event on the 16th December 2019.

2019-11-17, M1.2, Irish Sea

On the 17th of November 2019 at 14:56:08 local time a M1.2 earthquake occurred in the Irish Sea approximately 50km north-east of Dublin. The epicentre location is shown in the map below.

The event was too weak to be felt but was recorded by the Irish National Seismic Network (INSN) seismometers, and can be seen in the waveforms plotted below (most obviously on the eastern stations of Dublin, Louth and Wexford).

The INSN is operated by the Dublin Institute for Advanced Studies (DIAS) in co-operation with the Geological Survey Ireland (GSI).

2019-06-18, M1.9, Irish Sea

On the 18th of June 2019 at 20:53:12 local time (19:53:12 UTC) a M1.9 earthquake occurred in the Irish Sea approximately 15km west off Holyhead in Wales. The epicentre location is shown in the map below. The earthquake was detected by the Irish National Seismic Network (INSN) which is operated by the Dublin Institute for Advanced Studies (DIAS) in co-operation with the Geological Survey Ireland (GSI). The INSN did not receive any felt reports for this event.

The earthquake was detected by seismic stations of the Irish National Seismic Network (INSN) and the British Geological Survey (BGS), see seismograms below.

2019-04-29, M2.1 Donegal

On the 29th April 2019 at 21:18:23 local time (20:18:23 GMT) an earthquake of magnitude 2.1 occurred in Donegal. The location of the epicentre is 54.56N, 7.96W, about 15km south-east from Donegal town and 15km north-east from Ballyshannon, see figure below.  The earthquake was detected automatically by the Irish National Seismic Network (INSN) which is operated by the Dublin Institute for Advanced Studies (DIAS) in co-operation with the Geological Survey Ireland (GSI). The event was felt by members of the public in the south of Co. Donegal and parts of Co. Fermanagh and Co. Leitrim, see map at the bottom of this post. If you felt or heard this event please consider clicking here to fill out a small report. Short interviews about the earthquake were given by Dr Martin Möllhoff, Director of Seismic Networks at DIAS, in this ‘News at One’ bulletin on Radio RTE 1 and on OceanFM.

The event was recorded on the stations of the Irish National Seismic Network (INSN), see seismic traces below. Some stations from the BGS network in the UK detected the event as well.

Map of earthquake “felt” reports received from members of the public through the INSN online reporting system available here.

 

Live Seismograms
All stations here
Filtered versions here
DSB - Dublin
VAL - Kerry