| Clue | Source | Date |
|---|---|---|
| Large, rotating mass of cold air over Antarctica | Universal | 25 May 2025 |
| Air mass that affects winter weather | USA Today | 18 May 2020 |
| *One of two cold atmospheric cyclones | LA Times Daily | 02 Dec 2015 |
| Factor in cold waves | LA Times Daily | 21 Mar 2015 |
| *One of two cold atmospheric cyclones | ||
| Factor in cold waves | ||
| Cold weather phenomenon |