Overnight aftershocks followed earthquake felt across three Azorean islands
Nearly 100 low-magnitude aftershocks followed the 20 October earthquake felt on three Azorean islands. The last felt tremor was reported at 00:12.
Aftershocks following the earthquake of 20 October continued into the early hours, with a tremor felt at 00:12 on 21 October. The main earthquake, with a magnitude of 5.1, had been felt on São Miguel, Terceira and Santa Maria at 18:07.
In an update published by RTP Açores at 10:15 on 21 October, CIVISA reported close to 100 aftershocks, all of low magnitude. Rita Carmo, from the Azores Seismovolcanic Information and Surveillance Centre, provided the assessment.
For residents of the three islands where the main earthquake was felt, the update documents seismic activity continuing overnight. The 00:12 tremor was the latest aftershock reported as felt by the population in that assessment, which reflects the information available that morning.
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