Larry Cosgrove was great last season and so far this "winter". His latest...
What might turn out to be a dominant force for North America is the emergence of a Greenland blocking ridge next week. After some thunderstorm threats the next 72 hours from Texas and Oklahoma into the Ohio Valley and Mid-South, emphasis will shift to the western third of the continent, where a large 500MB vortex will eject a strong shortwave that looks top track close to 40 N Latitude by Christmas Day. Unlike the previous systems this month, this new feature will feature colder air and an extension of snow cover, possible through cities like Chicago IL, Cleveland OH and Boston MA.