Many classic precursors (esp +SCAND & persisten, troughing in/near the Mediterranean) are appearing in NWP models during week 2.
— Eric Webb (@webberweather) December 6, 2021
Supporting reference(s)https://t.co/EE9IrzkoyUhttps://t.co/U13OWiVVoXhttps://t.co/Valod85GKGhttps://t.co/UQWZuO10QOhttps://t.co/dNzpBwBcS9