Stromboli, January 18 - The famous volcano on the island of Stromboli continued to rumble Friday with no sign of stopping, experts said,. Seismic tremors ranging from medium to high levels began Sunday, according to vulcanologists and civil protection agencies monitoring the island north of Sicily. Lava has been flowing and experts are discussing whether to evacuate people living on the island, made famous in the classic 1950 Italian-American film Stromboli directed by Roberto Rossellini and starring Ingrid Bergman. Authorities who met in Messina said they are concerned that island residents living along the shoreline could be threatened by waves caused by the volcanic activity. Stromboli, part of the string of eight Aeolian Islands, has erupted very frequently in small, energetic bursts for centuries. The islands were cut off by rough seas amid a wave of bad weather Friday.