Dense fog conditions are likely during morning/night hours in isolated pockets over Himachal Pradesh, Punjab, Haryana, Chandigarh and Delhi during January 28-30; Uttarakhand on January 29 and 30; Uttar Pradesh, North Madhya Pradesh, Rajasthan and Bihar on January 28 and 29. Cold wave conditions are likely in isolated pockets over Himachal Pradesh, Punjab, Haryana and Chandigarh.