After a devastating winter storm in Texas this week, almost three million homes and businesses are still without power on Wednesday (Feb. 17).

Due to the state’s coldest temperatures in decades, burst pipes and power outages at treatment plants have caused water restrictions and a number of deaths as residents struggle to keep warm.

According to to Vice, carbon monoxide poisoning cases have skyrocketed as people began using barbecue pits, generators and their cars to heat up. “With that number of patients going in, it’s turning into a mini mass casualty event,” Dr. Samuel Prater, an emergency room physician at Memorial Hermann Texas Medical Center, told the Houston Chronicle.

As hot water and power outages continue to cause desperation in Texas, Louisiana, Mississippi and surrounding areas — just days before a second storm is expected to hit — celebrities have taken to social media to share prayers and resources to help.

See below.