Heavy rain struck parts of Chon Buri province overnight, flooding a main highway and stranding many vehicles, as the Meteorological Department warned tropical storm Vamco will bring more rain to the Northeas.On Monday night, heavy rain struck many parts of Chon Buri province from 8pm-10pm, causing the highway interchange at Moo 3 village in tambon Pong of Bang Lamung district to be flooded.