An earthquake measuring 3.4 (Richter), whose epicentre was located at sea, around 50 kilometres south/southwest of Olhão, was recorded at 17:39 at the stations of the Mainland Seismic Network, according to the Portuguese Institute of the Sea and Atmosphere (IPMA).
According to IPMA, until the preparation of its statement, “no information was received confirming that this earthquake was felt”.
If you felt the earthquake, you can help IPMA, which wants to map the extent of the effects of the earthquakes, by filling out a small questionnaire, available here.
According to the Richter scale, earthquakes are classified according to their magnitude as micro (less than 2,0), very small (2,0-2,9), small (3,0-3,9), slight (4,0-4,9), moderate (5,0-5,9), strong (6,0-6,9), large (7,0-7,9), important (8,0-8,9 .9,0), exceptional (9,9-10) and extreme (when greater than XNUMX).
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