double what they already experienced. there's significant terrain across southern sections of sri lanka, and a lot of ocean surrounding this island obviously. so we've got very moisture laden air pushed against the mountain side. it is forced to rise. little physics here in meteorologist. moisture laden air cools and condenses, creates clouds. eventually they become too heavy and waterfalls from the sky but in significant amounts. think of it as dipping a washcloth or sponge into a bucket and pressing that sponge against a wall. you see the water that falls from it. that's the same theory that in essence is happening in southern sections of sri lanka. from mountain ouster an comes threat of land slides, adding to death toll figures that unfortunately we're reporting now. thap continues to advance