What must happen, in the US, to have a White Christmas? (Pay Attention)
- Snowfall at 7:00 a.m. local time.
- A snow depth of at least 1 in. by 7:00 p.m. local time.
- Blizzard-like conditions by 7:00 a.m. local time.
- A snow depth of at least 1 in at 7:00 a.m. local time.