| Term: | Polar outbreak |
| Definition: |
The movement of a cold air mass from its source region; almost invariably applied to a vigorous equatorward thrust of cold polar air, a rapid equatorward movement of the polar front. (Or cold-air outbreak.) AMSglossary
GCW |
| Term: | Polar outbreak |
| Definition: | The movement of a cold air mass from its source region; almost invariably applied to a vigorous equatorward thrust of cold polar air, a rapid equatorward movement of the polar front. (Or cold-air outbreak.) |