A major winter storm began Saturday in the central U.S. and was forecast to move east over the next several days, producing heavy snow, significant ice and frigid temperatures, according to the National Weather Service.

It’s the type of winter weather we see more frequently and don’t really have a tough time identifying. Snowflakes are able to reach the ground – and not turn into freezing rain or sleet – when the temperature is at or below 32 degrees from the cloud base to the ground.