| Clue | Source | Date |
|---|---|---|
| A | The Washington Post Sunday | 02 Jan 2022 |
| *Advancing edge of a northern cold air mass | The Washington Post Sunday | 29 Sep 2019 |
| *Bringer of cold weather | New York Times | 06 Jan 2019 |
| *Bringer of cold weather | ||
| *Winter weather map line | Wall Street Journal | 01 Aug 2017 |