People walk during rain in the northern hill town of Shimla on Thursday, November 07, 2013. The intense cold wave sweeping the tribal areas and other higher hills of Himachal Pradesh further tightened its grip as mercury dropped by few notches and stayed below freezing point in most of the places. Met scientists say it is early to say if fog will disrupt rail and air services in the coming days. According to the India Meteorological Department, a western disturbance and associated induced cyclonic circulation would cover northwest India including Delhi NCR between November 7 and 9, and lead to rains and snowfall over the western Himalayan region and the adjoining northwest plains. AmitAmit, a painter by training with a PhD in fine arts, is a professional photo journalist by choice. Well traveled, he lives in Shimla.