This will translate to a significant warm spell for a good chunk of the country throughout most of this holiday week, including December 25th.
The jet stream-a river of air in the upper atmosphere-acts as a great barrier between competing air masses. Ridges in the jet stream allow for more moderate air to stream poleward. With a strong ridge forecasted, cities and states that fall under this regime appear situated for record-breaking Christmas warmth.
Prevalent 70s and 80s for Christmas Day
High temperatures will break into the 70s on Christmas Day as far north as St. Louis, Kansas City, and Colorado…
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Source www.theweather.com
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