A winter storm is sweeping across the country today and is poised to become a bomb cyclone, bringing blizzard conditions and flooding across much of the country's eastern half. The storm will be followed by a blast of arctic cold air, with as much as 88% of the contiguous US expected to experience temperatures dropping below freezing by Monday.
Dubbed Winter Storm Gerri, it comes days after a separate winter storm hit the central US and parts of the Plains (Why so many?). Gerri is forecast to make its way from the Four Corners region toward the central and eastern US, with 1-2 feet of snow projected in portions of Michigan, Wisconsin, and Illinois. Meteorologists say temperatures in Wyoming and Montana could reach between 20 and 30 degrees below zero and potentially below 50 degrees in the Northern Plains. The Southern Plains and Midwest could see temperatures dip into the minus 20s, while the South could see temperatures in the 20s.
The cold air pattern is projected to stay until at least the week of Jan. 22; see detailed forecasts for regions across the US here (w/clickable map).