In the mid-latitudes, the Twin Tiers is in the mid-latitude, the jet stream is called the prevailing westerlies as it only travels from west to east. In the Arctic Circle, the jet stream is called ...

However, this southward bend of the jet stream was less than expected, weakening its influence on the typhoon and slowing it. "It's as if the westerlies have missed catching the typhoon," Yoshino ...