Typhoon Olive was an erratic and slightly long-lived tropical cyclone that impacted Japan and affected Manchuria during early-August 1971.

Slow but gradual intensification occurred, becoming a tropical storm in the early hours of July 31 as it moved to the west, before taking a north-northwest track as it intensified to a typhoon on August 2 while approaching the Ryukyu Islands.

On the next day, it reached its peak intensity of 155 km/h (95 mph) and an unusually low barometric pressure of 935 mbar, equivalent to a mid-level typhoon as it started to batter the third-largest island of Japan, Kyushu.

It then moved to the north, while weakening back to a minimal typhoon before making landfall on the area, with the records pointing it to the east of Nagasaki on August 5.

[1] Nearly two days after, the agency upgraded the system to a weak tropical depression, estimating the sustained winds to be at 35 km/h (20 mph), despite the disturbance being highly disorganized at that time.

[1] On July 29, at 08:00 UTC, the Joint Typhoon Warning Center stated that the disturbance was now detected in their radar imagery and also started to watch the system's movement.

[1] At that time, the disturbance is highly disorganized, with its convection steered to the northeast, possibly due to the hostile environment where the system formed.

[2] Olive then slightly moved to the west-northwest before taking a north-northwestward track due to the weakness of another subtropical ridge, which was located near the Philippines.

[1][2] The system then accelerated to the northwest before intensifying further to a Category 2 typhoon at 12:00 UTC on August 3 and reached its peak intensity shortly, with maximum sustained winds of 155 km/h (95 mph) and an unusually low minimum barometric pressure of 935 mbar, as being recorded by a reconnaissance aircraft.

[2] Olive then neared Nakhodka in Primorsky Krai on August 8 before weakening further to a tropical depression, shortly before becoming extratropical early the next day.

[2] In Kasedashi City, Kagoshima, torrential downpours broke the embankment of the Kaseda River, flooding houses and establishments near the area.

[15] The typhoon heavily disrupted the activities of the 13th World Scout Jamboree, which was held in Fujinomiya, Shizuoka Prefecture from August 2 to 10, also the week when Olive formed.

[17] As Olive battered Shizuoka Prefecture between October 8 and 10, torrential rains and gale-force winds destroyed some tents and the campsite was reported to be flooded and washed out.

[19] Reports from different institutions and agencies, including Seoul's National Disaster Relief Center, said that Olive killed 27 in the country, all due to unknown reasons.