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The Atlantic hurricane season officially began on June 1, 2011. [21] It was an above average season in which twenty tropical cyclones formed. Nineteen of the twenty depressions attained tropical storm status, tied with 1887 , 1995 , 2010 , and later the 2012 season for the fourth-highest number of named storms since record-keeping began in 1851.
Based on the astronomical definition, winter begins at the winter solstice, which in 2010 occurred late on December 21 (early on December 22 in EST), and ends at the March equinox, which in 2011 occurred on March 20. [2] Based on the meteorological definition, the first day of winter is December 1 and the last day February 28. [3]
The 2011–12 North American winter by and large saw above normal average temperatures across the continent, with the Contiguous United States encountering its fourth-warmest winter on record, along with an unusually low number of significant winter precipitation events. The primary outlier was Alaska, parts of which experienced their coldest ...
The 2011 Atlantic hurricane season was an event in the annual hurricane season in the north Atlantic Ocean. It was well above average, with 19 tropical storms forming. [nb 1] Even so, it was the first season on record in which the first eight storms failed to attain hurricane strength.
Part of the 2011–12 North American winter The November 2011 Bering Sea cyclone was one of the most powerful extratropical cyclones to affect Alaska on record. On November 8, the National Weather Service (NWS) began issuing severe weather warnings, saying that this was a near-record (or record) storm in the Bering Sea . [ 3 ]
The January 8–13, 2011 North American blizzard was a major Mid-Atlantic nor'easter and winter storm, and a New England blizzard. The storm also affected portions of the Southeastern regions of the United States. This storm came just two weeks after a previous major blizzard severely affected most of these same areas in December 2010. It was ...
2 Only systems that formed either on or after January 1, 2011 are counted in the seasonal totals. 3 Only systems that formed either before or on December 31, 2011 are counted in the seasonal totals. 4 The wind speeds for this tropical cyclone/basin are based on the IMD Scale which uses 3-minute sustained winds.
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