My father and my father-in-law both served in the Aleutian Campaign. FIL was an Army anti-aircraft artilleryman and my dad was in the Navy. My dad ended the war with nine battle stars serving on the Fleet Oiler USS Neches AO47, that was involved in every major invasion in the Pacific. Anyway, with all that action and despite hitting a mine, kamikazes, having his ship used as bait to entice the Japanese fleet at Leyte, and the Okinawa Typhoon in 1945, he says his most terrifying experience was a storm in the Bering Sea.
Yep, here in Alaska the weather in the Aleutians and Bering Sea is well known. A joke here: their weather is so bad that they use logging chains for wind socks. Ordinary Bering Sea storms are as bad (and worse) as the Okinawa Typhoon you mentioned, we are not surprised your dad would say it was his most terrifying experience.