Chiming in on the medium range cold outbreak discussion:

This is an interesting development from late Dec extended range forecasts that initially favored East Coast ridging, but with hints of a Greenland block developing that may favor a colder outcome instead - and here we are! https://t.co/nARnj0XB4o pic.twitter.com/vtoC36R2d5

— Tomer Burg (@burgwx) January 5, 2024