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Starting in late December as a result of the southward shift of the polar vortex, extremely cold conditions froze the eastern United States in the last few days of 2017 as well as into the new year. Following a brief respite in mid-January, cold temperatures swung back into the eastern U.S. shortly afterwards.
'Chicago Beach Keeps Locals Warm During Polar Vortex' – video new report from Voice of America. Chicago river frozen during 2019 polar vortex February 1, 2019. In the Chicago area, temperatures plummeted as low as −23 °F (−31 °C) at O'Hare International Airport on January 30, with a windchill of −52 °F (−47 °C).
The January–March 2014 North American cold wave was an extreme weather event that extended through the late winter months of the 2013–2014 winter season, and was also part of an unusually cold winter affecting parts of Canada and parts of the north-central and northeastern United States. [5]
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"A shift of the polar vortex will be at the heart of the brief cold blast in the Northeast," AccuWeather Chief On-Air Meteorologist Bernie Rayno said. In this case, a small lobe of the feature ...
The February 2015 North American cold wave was an extreme weather event that affected most of Canada and the eastern half of the United States. Following an earlier cold wave in the winter, the period of below-average temperatures contributed to an already unusually cold winter for the Eastern U.S.
The polar vortex, which is a storm at the jet stream level of the atmosphere, has kept frigid air pent up above the Arctic Brief visit from polar vortex to bring record-challenging cold to ...
In order for lake-effect rain or snow to form, the air moving across the lake must be significantly cooler than the surface air (which is likely to be near the temperature of the water surface). Specifically, the air temperature at the altitude where the air pressure is 850 millibars (or 1.5 kilometres (0.93 mi) altitude) should be 13 °C (24 ...