NOAA OPC 500 mb Analysis
A large and deep upper-level low over the western North Pacific is reflected at the surface by an intense 952 low with storm to hurricane force winds west and south of the center with significant wave heights up to 13 meters (43 feet). This system will slowly weaken as it moves east-north east towards the Bering Sea over the next few days.
Over the eastern North Pacific a high-pressure Omega Block prevails between 130W and 160W which will prevent storms from entering the Gulf of Alaska. Low pressure over the US West combined with the high over the eastern North Pacific will produce strong to near gale N-NW winds along the US West Coast.
NOAA OPc Surface Analysis
