I heard that weather moves from west to east, such as from western Canada to eastern Canada (maybe 4-5 days later) and then another 4-5 days to England and France. Is this true?
Yes. Most of the time weather does move from west to east, with some variation. For example, sometimes our weather moves from the northwest to the southeast or from the American Southwest into the Canadian Northeast. The main reason for these variations is the position of the jet stream. On rare occasions, however, large blocking areas of high pressure aloft develop in the northern latitudes, particularly over the northern oceans such as the north Atlantic. When this happens the clockwise flow around the high can move weather systems in the opposite direction from east to west.
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