true, but also, on the grand scale . . . .
warm arm from the Pacific has been flowing into Alaska, and Alaska cold air is flowing south into Canada and the USA
true, but also, on the grand scale . . . .
warm arm from the Pacific has been flowing into Alaska, and Alaska cold air is flowing south into Canada and the USA
several times, if I recall correctly
heavier science here
several times, if I recall correctly
[normal situation](https://i.imgur.com/lgmDHv7.jpg)
[wonky situation](https://i.imgur.com/8wRnChl.jpg)
[one scenario](https://i.imgur.com/xVvbT3I.jpg)
heavier science here
https://en.wikipedia.org/wiki/Rossby_wave
It's called Winter.