MANILA -- Over 100 passengers were stranded in Catanduanes on Thursday after sea vessels cancelled trips due to tropical storm "Santi." Catanduanes is under public storm warning signal number 1. According to Philippine Coast Guard (PCG) spokesperson Commander Armand Balilo, the stranded passengers were from the ports of Catanduanes and Tabaco. As of 7 a.m., a total of 123 passengers were stranded. Meanwhile, the PCG advised fishermen not to set sail to prevent any untoward incident. Residents were also advised to stay alert against possible landslides and storm surges. -- Reports from Noel Alamar, dzMM; Thea Omelan, ABS-cBN News Bicol