"It's called 'black ice' because it tends to look like the rest of the pavement on the road, although in reality, it's actually clear," the US Forest Service notes. "Black ice forms without creating bubbles, which allows it to blend in with any surface it forms over. Black ice is dangerous precisely because it's hard to detect."

FOX 26's Randy Wallace caught up with some Houstonians who took advantage of the rainfall in Houston.

Some places that don't typically see snow, like Houston, Texas, are now getting several inches of snow this winter.