Shown above is the medium range height forecast across North America. In areas of cooler colors, low pressure is favored. In the same sense, warm colors indicate high pressure tendencies. Looking at the European model's forecast above, we see persistent low pressure pushing south from Canada into the Western US and Plains. In response to the low pressure in the West, high pressure is inclined to form in the Eastern US, and this trait is reflected nicely on the European model's above forecast. If the jet stream follows the low and high pressure waves, I would expect the jet stream to keep a relatively strong stance over the southern Rockies and southern Plains in response to the persistent low pressure anomalies in the area. When the jet stream approaches the high pressure area in the East US, it is expected the stream should make a quick move northeast through the Midwest and Great Lakes. This would put the last two regions in the temperature battle zones, and possibly in whatever severe weather risk may come along while this pattern is in place.