A severe cold wave has gripped several parts of North India with Himachal Pradesh, Jammu and Kashmir, and Uttarakhand witnessing heavy snowfall, leading to the disruption in travel. At least 226, including three national highways, have been closed in Himachal Pradesh, while in Uttarakhand's Dehradun, intense snowfall has halted traffic along a 30-kilometer stretch of the Tyuni-Chakrata-Mussoorie National Highway.