By Alex Sosnowski – AccuWeather
Following a very warm start to spring over the eastern United States, why is cold air returning in April, when temperatures typically trend upward?
During much of March and long stretches of the winter for that matter, arctic air had been locked up across central and northern Canada.
“Persistent high pressure aloft near the Atlantic coast prevented cold air from moving southward out of Canada and into the eastern United States,” according to AccuWeather Senior Meteorologist Brett Anderson.
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Survival World News 
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