Coimbatore: While the low-pressure formation over the Bay of Bengal in the first week of July did not bring much rain to the city, a new active trough on the east coast may be more successful in bringing light to moderate showers. Though the trough is predicted to bring rain to areas along the Western Ghats including Pollachi, Kinathukadavu and western Coimbatore, the city may experience some isolated and patchy rain, say weather experts. The regional meteorological centre has predicted heavy showers in the Nilgiris, Theni and Salem districts that may extend to isolated places in Coimbatore until Thursday. “There is an active trough in the west coast, extending from Maharashtra to Kerala. Whenever there is an active trough, all coastal areas and around the Western Ghats receive good rain,” said Skymet Weather Services chief meteorologist Mahesh Palawat. “However, showers will be mostly restricted to foothills and places on the Western Ghats.”