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The north-central U.S. is suffering from the most extreme cold, with wind chills as low as -60 degrees for parts of the Dakotas, Montana and Minnesota.. Bismarck, North Dakota, recorded a low ...
The 2013–14 North American winter was one of the most significant for the United States and North America as a whole, due in part to the breakdown of the polar vortex in November 2013, which allowed very cold air to travel down into the United States, leading to an extended period of very cold temperatures.
The event occurred in early 2014 and was caused by a southward shift of the North Polar Vortex. Record-low temperatures also extended well into March. On January 2, an Arctic cold front initially associated with a nor'easter tracked across Canada and the United States, resulting in heavy snowfall in some areas. Temperatures fell to ...
Bismarck, North Dakota, plunged to 39 degrees below zero Tuesday, their coldest temperature since Jan. 15, 2009 and only 6 degrees shy of their all-time record low.
From late December to early January, a sudden stratospheric warming event was observed over the Arctic, which caused the "polar vortex" to weaken and split into three lobes. In late January 2019, one of these lobes traveled southward and stalled over central Canada and north-central United States for about a week before the upper-level flow of ...
Driven by the jet stream, part of the polar vortex — a large area of cold air that spins over the North Pole in the winter — will drop about 3,000 miles south into the U.S., delivering the ...
Early on November 7, rainbands began affecting the New York metropolitan area, however, due to the cold air that was in place over Canada near the U.S–Canada border, snow began to break out on the storm's western side, directly over the state of New Jersey. Snowfall rates approached 1–2 inches (2.5–5.1 cm) in some areas.
The polar vortex is a large area of cold air and low pressure that normally spins over the North and South Poles. During the winter months and when the jet stream allows, this cold air can drop ...