The large-scale pattern aloft features a split flow. The northern branch features a trough over Alaska. A weak ridge over northwest Canada. And a weak trough over northeast Canada and Greenland. The southern branch of the jet features a trough in the Gulf of Alaska. A ridge extending from the southwest states into the northern Plains. A weak trough over the southern Rockies and West Texas. A trough over the Great Lakes region. And a ridge off the east coast of the US.
Today's US and European models are not in very good agreement. We ...
