Much–but not all–of March will be Milder than Average

Milder than average once we get past this weekend, that is. A warm ridge of high pressure, which shunts arctic air far to the north, is going to move to the eastern US early in the 2nd week of the month. It won’t be a permanent fixture for the entire month, but the upper air flow even after this ridge weakens and flattens will still flood most of the US with Pacific air, with no arctic air in immediate site. Later in the month, an extended version of the European model suggests greater variability in the pattern with more short…