The Portuguese Institute of the Sea and Atmosphere (IPMA) recorded two small earthquakes in the early hours of this Wednesday morning, one with a magnitude of 2.8 the other 2.9 on the Richter scale.
Both had their epicentres around 20 kilometres northeast of Silves, the first earthquake was recorded at the stations of the Continent Seismic Network, at 03:11 (magnitude 2.8 Richter), and the second at 03:12 (magnitude 2.9 Richter).
According to the IPMA, there have been no rports from the public that the earthquakes were felt.
On Monday, an earthquake measuring 4.7 on the Richter scale was recorded at 1:24 pm, with its epicentre approximately 14 kilometres southwest of Seixal, in Setúbal and this was felt with maximum intensity in Sintra (Lisbon) and Almada (Setúbal), and with less intensity in some Central and Algarve areas.
A day later, on Tuesday, the IPMA recorded two aftershocks of the earthquake on Monday, predicting that more could be recorded in the next few days.
According to seismologist Paulo Alves, the 'aftershocks' that occurred on Tuesday, the first measuring 2.4 on the Richter scale, at 10:30, and the second measuring 1.8, at 11:34, are “earthquakes very close to the main earthquake”, which occurred “on the edges of the main earthquake which occured on Monday”.
Paulo Alves explained that aftershocks, “are normally one degree less than the main earthquake”.
Source https://postal.pt/ - Photo courtesy of Depositphotos.com
