Models indicate that a belt of westerlies across the northern mid-latitude Pacific may undergo considerable amplification during this period. It appears that this will include a building mid-level ridge axis to the west of the British Columbia/Pacific Northwest coast, while broader ridging across the southern mid-latitude/subtropical eastern Pacific begins to shift inland of the California coast and Baja. As this occurs, initially amplified downstream troughing is forecast to progress east-northeastward out of the Four Corners states.