The Jet Stream has dropped south to Northern Mexico and the Gulf...Arctic air will begin moving south and should arrive by mid month .......A weak clipper-type low center will bring a light wintry mix to partsof the Ohio Valley, Central Appalachians, and Mid-Atlantic......Unsettled weather to arrive across California and portions of the Southby late Tuesday...Little to no precipitation is expected for most of the country as we ringin 2024 tonight and head through New Year's Day, and tem...