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1984 Barneveld, Wisconsin tornado outbreak
The 1984 Barneveld, Wisconsin tornado outbreak is a significant severe weather and tornado event that took place across the central United States from North Dakota to Kansas on June 7–8, 1984. The tornado outbreak produced several significant tornadoes including an F5 tornado which traveled through Barneveld, Wisconsin in the early hours of June 8, 1984. The entire outbreak killed at least 13 people across three states including 9 in Barneveld alone.
==Meteorological synopsis==
A low pressure system entered the Midwestern United States on June 7, 1984 and intensified while bringing a surge of moist and humid air coming from the Gulf of Mexico. After most of the affected areas were hit by a Mesoscale Convective Complex earlier during the morning of June 7, the unstable atmosphere, as well as wind shear and high CAPE values produced a favorable environment for the development of extensive severe weather with possible tornadoes.〔http://www.aos.wisc.edu/uwaosjournal/Volume1/AOS453/FCS_Harrington.pdf〕 Starting at around mid-afternoon, it started to produce several tornadoes across southern Minnesota and northwestern and southern Iowa including three F3s and a long-track F4 which traveled over 130 miles from extreme northern Missouri to southwest of Iowa City. That tornado killed 3 people including one in Missouri's Harrison County. Another person was killed in Ringgold County in Iowa by an F2 tornado at around 9:00 PM CDT. Activity continued through the overnight hours as a new cluster of storms developed across Wisconsin near the Iowa and Illinois borders and produced strong tornadoes including the Barneveld tornado up until the early morning hours of June 8, 1984 before dissipating.
Straight-line winds in excess of 100 mph and very large hail were also reported in eastern Iowa from the storm that went on to drop the tornado in Barneveld, Wisconsin.
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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