1of3 FILE PHOTO --- CPS Energy work crews were seen driving along Vance Jackson Road during another day of snow fall in San Antonio on Thursday, Feb 18, 2021.Kin Man Hui, San Antonio Express-News / Staff photographerShow MoreShow Less 2of3Linda McCoy throws wood onto a fire to heat in her home in Houston on Wednesday. Public safety officials warned about the dangers of carbon monoxide poisoning after emergency calls related to people using charcoal grills to try to heat their homes.Photo by Mark Felix for The Washington PostShow MoreShow Less 3of3 HOUSTON — When Shalemu Bekele awoke on the morning of Feb. 15, the townhouse he shared with his wife and two children was so cold, his fingers felt numb.