Alberta clipper
Low pressure area weather system common to North America / From Wikipedia, the free encyclopedia
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An Alberta clipper, also known as an Alberta low, Alberta cyclone, Alberta lee cyclone, Canadian clipper, or simply clipper, is a fast-moving low-pressure system that originates in or near the Canadian province of Alberta just east of the Rocky Mountains and tracks east-southeastward across southern Canada and the northern United States to the North Atlantic Ocean.[1][2][3]
Alberta clippers constitute a major winter-season storm track for extratropical cyclones in the Northern Hemisphere, tracking across the continent in 2–3 days while affecting weather in parts of the Prairies and central provinces of Canada, as well as the Upper Midwest, Great Lakes, and New England portions of the United States. They are associated with cold, dry continental air masses and generate small-scale, short-lived weather events typically producing 8–15 cm (3-6 inches) of snow in a 3-6 hour period. However, they can precipitate sudden temperature drops and sharp winds leading to local blizzard conditions, especially when interacting with moisture from the Great Lakes.[4] [5]