Cold wave conditions are very likely to prevail over Punjab and Haryana on December 7 and during December 10 and 11 and over Madhya Pradesh and Vidarbha on December 7 and 8, said IMD. Chhattisgarh, Jharkhand and Odisha will also experience cold wave on December 7. Dense fog conditions are likely to prevail in Assam, Meghalaya, Nagaland, Manipur and Mizoram.