The primary jet stream continues to be displaced south of 40 N latitude over the western and central North Pacific then turns northeastward towards the Gulf of Alaska due to a persistent blocking ridge over the easternmost North Pacific.
NOAA OPC 500mb Forecast Track
As a result the primary storm tracks will be from south of Japan to near 42N/180 then northeast over the Gulf of Alaska. Frequent gale to storm westerlies likely south of low pressure centers with brief intervals of hurricane-force conditions possible, especially in the central North Pacific.
NOAA OPC Surface Forecast
