if your morning started with a shake you're not alone Lisbon just experienced its strongest earthquake in over a decade early Monday morning a 5.4 magnitude earthquake struck off the coast of Lisbon Portugal this is the strongest seismic event in the area since 2009 the Tremors were felt as far away as Porto Spain and even Morocco residents in Lisbon described the shaking as intense with many woken from their sleep despite the strength of the Quake there have been no reports of major damage or casualties the epicenter was located 58 km west of ss at a depth of 21 km authorities are urging the public to remain calm and are coordinating with emergency services to ensure safety this earthquake highlights Portugal's vulnerability to seismic activity due to its proximity to the Eurasian and African tectonic plates fortunately no tsunami warning has been issued stay tuned for more updates as we continue to monitor the situation our thoughts are with everyone affected by this event don't forget to like comment and subscribe for the latest news