Seismographs from the Portuguese Institute of the Sea and Atmosphere (IPMA) registered, last night, an earthquake southwest of Ribeira Brava.
The earthquake had a magnitude of 1.5 on the Richter scale and occurred at 8:39 pm on Tuesday, September 28th.
This was not, however, the first shock, registered yesterday by the IPMA. At 8:01 am, an earthquake measuring 2.0 on the Richter scale occurred, 2km deep, off Câmara de Lobos.
None of the shocks will have been felt by the population.