Snow in Chicago

La Nina pressure system from NOAA website bringing cooler temperatures and higher precipitation to the USA's upper half.
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La Nina Sets Chicago Up for Exceptionally Snowy Winter

La Nina conditions are climate patterns in the equatorial pacific characterized by unusually cold temperatures, according to the National Weather Service website. These were indicated by expanding below-average sea surface temperatures along the central and eastern Pacific Ocean along the equator.  Past La Nina patterns have brought above-average amounts of snowfall to the Chicago area. […]

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