A winter storm that dropped heavy snow and glazed roads throughout the U.S. South was maintaining its icy grip on much of the region into the weekend. Power outage numbers around Atlanta crept up Friday night as meteorologists warned of accumulating freezing rain.

Atlanta is bracing for freezing conditions and icy roads as temperatures drop and wintry weather continues to affect the region. Here’s a simplified breakdown of what you need to know:

Twenty states, from Texas to Delaware, were on alert Friday for snow and ice as the storm continued to move across the South.