the Bering Sea is home to some of the roughest waters in the world. The combined effects of climate, tide, currents and temperature gradient make the area epically hazardous for ships and aircraft.
During WWII the Japanese invaded Attu and Kiska islands in the Western Aleutian islands. The United States moved forces into the area but could not engage the enemy because of the horrible weather. It took almost a year to dislodge the Japanese because of almost constant fog, heavy seas, unpredictable winds, currents and tides.
The United States lost more aircraft to weather than to enemy action. Even submarines had problems operating and two were lost with all hands.