In mid-March winter broke and it did so by completely flipping the script. Warm air started to build across the Plains states by March 10th the jet stream that had dropped far south in the United States bring cold air with it as it retreated quickly northward into Canada. That allowed the warm air out west to pour into the East. March 12 , 1990 saw unheard of record high temperatures. The mercury reached 90 in Raleigh, NC, 87 in Norfolk, Va. 86 on the beaches of Atlantic City. And amazing 95 in Baltimore Md, breaking a record that had stood for 100 years. Meanwhile cool air still helped out over New England and Long Island. While readings in northern New Jersey soared into the upper 80s, central Long Island was chilly. LaGuardia Airport, a mere 60 miles away in New York City reached no higher than 47. But the winter was clearly on the run on March 12, 1990 and no more artic air reached into the Eastern states until the following winter.
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