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An active weather pattern is setting up Wednesday through the weekend, with heavy snow forecast over the mountains across the West and rain expected along the coast.  

SEE IMAGES: REMEMBERING SUPERSTORM SANDY 10 YEARS LATER

West rain forecast

Rain forecast in the West through Sunday (Credit: Fox News)

Much colder air will crash into record-setting warmth Thursday and Friday, setting up a potential severe weather outbreak over the Plains. 

Plains record highs

Potential record high temperatures on Wednesday in the Plains (Credit: Fox News)

That is anticipated to bring large hail, damaging winds, tornadoes and flooding rainfall.  

Plains rain forecast

Rain forecast in the Plains through Saturday (Credit: Fox News)

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Meanwhile, warmer-than-average temperatures will bring nice weather for much of the eastern U.S.