Magnitude 4.0 quake hits Euboea on Saturday

A seismic tremor measuring 4.0 on the Richter scale was recorded on Saturday 19 September 2026 at 12:56 local time (09:56 GMT) in the Euboea region. The tremor was felt across the wider area of northern Euboea, where residents described the seismic event as noticeable but brief, without causing panic according to initial reports. The magnitude of the tremor classifies it as moderate intensity, while the recording time—shortly after midday on Saturday—coincided with hours of increased activity in the region. The news spread quickly, as initial reports about the event were published the same day by local and national media outlets.

According to the Geodynamic Institute of the National Observatory of Athens, the epicenter of the earthquake was located approximately 8 kilometers from Lake Euboea, at a focal depth of 18.2 kilometers. These are the official details provided to the public by the competent scientific institution, which systematically monitors seismic activity across Greece. However, a second report placed the earthquake’s epicenter near Prokopi, also in northern Euboea. The two locations mentioned—Lake Euboea and Prokopi—are both in northern Euboea, but are different sites, indicating that the available reports differ as to the precise epicenter location. This difference does not dispute the magnitude of the tremor or its recording time, which remain consistent across all reports.

By Saturday evening no material damage or injuries had been reported in connection with the seismic tremor. Northern Euboea, where the earthquake was felt, remained in normal operating rhythm, with schools, shops and services continuing to function normally. Local authorities have issued no special announcement beyond the recording of the event by the competent scientific institution, while no need for emergency protective measures for the population has been reported. The data from the tremor remain under monitoring by the Geodynamic Institute, with no further details provided to the public so far regarding any afterseismic activity.

The Geodynamic Institute of the National Observatory of Athens remains the official source of information on seismic activity in the region, as it is the competent body that records and processes data from each seismic event in the country. More topics concerning Greek society can be found in the relevant section, while current developments from across Greece are updated continuously with the latest news. This report is based on information from ERT and Newsit, which recorded and published the seismic tremor the same day, Saturday 19 September 2026.