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Sunday Storm

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The pitter-patter of rain drops on gutters across the Northeast Sunday afternoon signaled the end of winter across the majority of the East Coast. A surge of mild air spreading northeastward will bring temperatures of at least 50°F as far north as New York City Monday. Temperatures are expected to be slightly cooler Tuesday and Wednesday, but they will only be a few degrees cooler than average ahead of a more substantial warmup late week that . This pattern of frequent temperature swings is quintessential of spring and is expected to continue indefinitely. But as promised near the end of February, snow and extreme cold are not expected to be associated with the intermittent temperature downswings.There is abundant support suggesting winter’s demise besides the increasing sun angle. First and foremost, the Arctic Oscillation (AO), the climate mode that describes the intensity of the circulation in the arctic, is in its…