The Greenland High regime appears to be leading the battle of the regimes following the current Pacific Trough regime associated with much of the North American warmth.

Today's extended GEFS ensemble has many members with Greenland & eastern Canada blocking in mid January: https://t.co/dOBNOxtNng pic.twitter.com/RFLzl6zJW7

— Tomer Burg (@burgwx) December 24, 2023