Comment: Coldest start to January in 10+ years fortunately without major snow or ice storms. Most intense cold is across the Interior Northeast. Most of the nation is drier than normal.
Comment: A dramatic change in the East as a warmer regime emerges. The West turns colder.
Comment: Widening West chill, warm East – a La Nina pattern.
Observed temperature anomalies and precipitation amount for Dec. 17-23, 2017
