A series of three mild tremors in less than 24 hours shook the islands of Evia and Samos yesterday with no reports of damage as experts forecast further seismic activity over the next few days. At 5.20 p.m. an earthquake measuring 4.2 on the Richter scale struck an undersea area off the town of Aliveri on Evia, making its presence felt in Athens, some 40 kilometers southwest of the epicenter. It was the second tremor to hit the area in a day after a 4.2-point quake shook the town early yesterday morning. Meanwhile on Samos, a 4.8-point earthquake also jolted residents early yesterday. Georgia Panopoulou, seismologist at the Athens Geodynamic Institute, told Kathimerini that seismic activity in the region close to Samos began in October of last year and is expected to continue. «It is estimated that small earthquakes will continue in coming days without any worrying seismic activity,» she said. Panopoulou added that apart from a 5.4-point tremor in 1996, the region does not produce quakes of more than five Richter.