The latest Ens means in the long range are hinting at an improving pattern beyond mid month, with the AO and NAO trending toward negative and with the TPV back over N Hudson Bay. This look suggests some colder air intrusions would be possible for central and eastern US, as NS disturbances are directed southward in the flow between the EPO ridge and the TPV. A more -NAO might help facilitate getting colder air further southeast/ flattening the ridge along the east coast, somewhat mitigating the -PNA. Always a battle. We really need that ridge south of the Aleutians to not be the predominant feature. Some weakening and a slight shift eastward would improve our prospects.