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Story summary
- Chicago faces a significant winter weather shift this week as temperatures drop about 50 degrees starting Sunday.
- The National Weather Service issued a winter weather advisory, with thunderstorms and high winds forecast.
- Snow is expected to taper off by evening, but blowing snow may keep hazardous driving conditions.
- By Wednesday, temperatures rise into the 40s.
- Highs could reach 60 by Thursday, according to meteorologist Zachary Yack.
