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- M2.6 - M2.6 earthquake in Santa Coloma de Farners (Girona)
On September 28, 2025, a low-magnitude earthquake occurred near our stations. A perfect local event to document.
The low-magnitude M2.6 earthquake occurred in Santa Coloma de Farners, with its epicenter at 41.8285E 2.6747E and a depth of 15.2 km.
These earthquakes don't usually leave a strong echo, as they are common over long periods, especially in hydrothermal active zones like the one where it occurred. However, its proximity made it a valuable piece of data for analysis.
The seismogram accompanying this blog post is from the daily helicorder data captured at that moment. The seismogram shown here is the raw data, and the one below is the filtered signal between 1.0 and 10 Hz.
Earthquake data:
| Date and time of origin: | 2025-09-28 15:21:21 UTC |
| Date and time of arrival at the Citizen seismic station: | 2025-09-28 15:21:25 UTC |
| Location where the station is located: | Germans Sàbat, Girona, ES (EU) |
| Time difference from the event to arrival at the station: | 0 minutes and 4 seconds |
| Distance from the epicenter to the station: | 21,58 Km |
| Wave speed: | 5,40 km/s => 5.395,63 m/s |
| Wave type (according to speed): | P |
| Sensor type: | Geophone 4.5Hz - 200 V/m/s |
| Sampling frequency (sps): | 100Hz |
| Place of Origin: | Santa Coloma de Farners |
| Geodetic coordinates of the epicenter: | 📍 41.8285°N 2.6747°E |
| Depth (hypocenter): | 15.2 km |
| Magnitude Richter Scale: | M2.6 |
| Modified Mercalli Scale Magnitude MMI => DYFI (Did You Feel It): | I * MMI estimated |
| URL Official Data IGN: | https://www.ign.es/web/ign/portal/ultimos-terremot... |
Video viewing software: Globalquake.net
Rafael Martín Soto - IT CEO / Artificial Intelligence
Rafael Martín Soto
Computer scientist by vocation. Organization of conventions, presentations, advanced studies in Artificial Intelligence and optimization of resources. More than 20 years of experience in server administration, web and cybersecurity. Lover of the use and optimization of natural resources, recycling and nature
Technical specialist in management informatics
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