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1972 Portland–Vancouver tornado
The 1972 Portland–Vancouver Tornado was a deadly F3 tornado that struck Portland, Oregon and Vancouver, Washington on April 5, 1972. The tornado carved a nine-mile (14 km) path of destruction across the heavily populated Portland metropolitan area, leaving 6 people dead and 301 injured while causing $3–5 million (1972 USD) in damage. It was the deadliest tornado in the United States in 1972 and remains the deadliest tornado in the history of the Pacific Northwest.〔(【引用サイトリンク】publisher=Waymark )〕〔 It was the first F3 tornado to strike Oregon since June 3, 1894 and no tornadoes in Oregon or Washington have equalled its intensity ever since.
==Storm history==
A very turbulent squall line of thunderstorms moved northeast across Portland, Oregon and was tracked by the National Weather Service. The strongest thunderstorm was tracked near the town of Tigard. The tornado formed from this thunderstorm and touched down near the edge of the Columbia River. The tornado moved 1½ miles before crossing the Oregon/Washington border. The tornado was difficult to observe because of the fog and the mud and flying debris drawn up by the tornado. After making landfall on the Washington side of the Columbia River, the tornado continued its journey before dissipating.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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