It is closely related to the polar jet stream, a strong wind current that forms at the boundary of the polar vortex. Together, these forces help to trap cold air around the poles. However ...
impact this polar jet stream. The timing is uncertain for North America but could see a change in the pattern for late March into early April." Pastelok added there was a small chance of a ...
It’s really, really cold again – as the US shivers through at least the eighth blast of air from the Arctic this winter. Here’s why it keeps happening.
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