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1912 United States cold wave : ウィキペディア英語版 | 1912 United States cold wave The 1912 United States cold wave (also called 1912 cold air outbreak) remains one of the coldest winters recorded to occur over the northern United States since meteorological data has been kept by the United States Weather Bureau, which was established in 1870. The cold wave started in November 1911 and continued into March 1912. ==Early winter==
The cold weather started early in winter, with November being the coldest on record over the contiguous US at .〔(Climate at a Glance ); National Oceanic and Atmospheric Administration〕 December was relatively mild east of the Continental Divide, but in January 1912 Michigan with an average of , Wisconsin at and Minnesota with an average of set records for their coldest month on record. Minneapolis set a record with 186 consecutive hours of sub-zero temperatures, from 8 pm on December 31 until 1 pm on January 8; after four hours slightly above zero the temperature dropped below for another 121 hours, until 10 am on January 13. The cold air moving south from the Arctic caused many places in the northern United States to be severely cold, with extreme wind chills. In early January cold air kept moving south from an Arctic pressure system, bringing some of the coldest air seen in the United States since 1886. The cold wave is reported to have killed 47 Americans in the first two weeks. In January 1912, Sioux Falls saw a record low temperature for the twentieth century of . That area also saw the longest stretch of below-zero weather for a single winter. Niagara Falls froze so densely that some people were able to safely cross on ice bridges.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「1912 United States cold wave」の詳細全文を読む
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