A major winter storm slammed the US Gulf Coast Tuesday, blanketing parts of a region largely unaccustomed to extreme winter weather with record-breaking snowfall.

Just how much snow & freezing rain fell in Northeast Florida and Southeast Georgia? A look inside the numbers from the Jacksonville-area winter storm.

It's something very weird and nuanced going on right now,’ says one expert about the potential reasons for the snow blanketing much of the southern U.S.