Silchar, Jan 15: With a little variation on the English poet Shelley, it might be said, ‘if summer comes, can winter be far behind’. After having a long spell of warm summer, people quite turally wait for winter that usually sets in from the month of October. This comes as a great relief to the people of northeast in particular. But, as the winter enters December, it has taken a terrible form with mercury dipping down and sending shivers down the spine of many. In fact, a cold wave has been sweeping down Barak Valley and it continues without immediate sign of respite.