The early-May 1965 plague tornado sequence was a major severe weather event that affected much of the Central United States on May 5-8, 1965. For four consecutive days, the tornado outbreak yielded at least three significant (F2) tornadoes every day, and at least two violent tornadoes (F4-F5) on three of the four days. The entire sequence produces 37 significant tornadoes, including at least nine tornadoes of violence, one of which is rated F5. On May 5, two F4s invaded Iowa, including a long traced tornado family wounding 11 people. On May 6, the outbreak of six powerful tornadoes, four of whom were violent F4s, affected Minneapolis and St.. Paul, Minnesota, and has been nicknamed "The Longest Night" , killing 13 people and causing great damage. - at the time of the single most detrimental weather event in Minnesota history. Three of the six tornadoes occurred on the ground simultaneously, and two of them struck parts of Minnesota State Highway 100 (now Interstate 694) and University Avenue in the city of Fridley. Both Fridley tornadoes destroy 1,100 homes and destroy about 425; total losses reached $ 14.5 million, $ 5 million of which for the Fridley school system.
On May 7, three significant tornadoes hit parts of the Upper Midwest, and beginning early May 8, a large tornado outbreak affected Great Plains countries, mainly in Nebraska and South Dakota. The outbreak on 8 May resulted in many significant long-lived tornadoes, including at least three violent tornadoes, two of which were in fact long-traced tornadoes. A very large F5 tornado struck Tripp County in South Dakota, and two large F4s were tracked throughout Greeley and Antelope County parts in Nebraska. One of the F4s attacked the small village of Primrose, almost destroying the settlements, causing F5 damage, and killed four people. In addition, the high-end F3 eliminates a farm in Gregory County, South Dakota, and possibly also F4. Many individual tornadoes on May 8 move north and northwest, an unusual trajectory for supercells in this Great Plains section. Many long-traced tornadoes on this date, rather than a single tornado, may be a tornado family like two long-lived F4s.
Video Early-May 1965 tornado outbreak sequence
Sinopsis meteorologi
The temperature on May 6 was above 70 Â ° F with a high dew point, which is considered unusual for early May in Minnesota. A strong low-pressure area associated with a moving top-level system from the southwest and a slow-moving cold front helps trigger a storm. This storm was formed as a training supercells - a very rare atmospheric phenomenon in Minnesota. Because of the training, the same common areas of Sibley County through Carver and Hennepin and to the northwestern region of Ramsey continue to get the burden of these cells.
Maps Early-May 1965 tornado outbreak sequence
Confirmed tornado
May 5
May 6
May 7
May 8
The famous tornado
Fridley, Minnesota (two tornadoes)
Two tornadoes landed in Fridley, more than an hour apart. Overall, six people were killed in a Fridley tornado and more than 180 were injured. More than 450 homes were destroyed in Fridley, and the surrounding Mounds View was severely damaged. A man who called WCCO radio after the first Fridley tornado claimed in the air that he was in his car when a tornado hit and that a tornado blew out his car window. Though he is believed to have been killed by Fridley's second twister of the night (who killed a 26-year-old man with a similar name), the caller was actually a teacher at Fridley Junior High School who survived. The tornado also damaged the mark that adorned the Heights Theater at Columbia Heights. Overall, the two Fridley tornadoes destroyed 1,100 homes and destroyed around 425; total losses reached $ 14.5 million, $ 5 million of which for the Fridley school system. Photographs for the previous Deephaven and the second Fridley tornado were published in the Minneapolis Tribune (now the Star Tribune) newspaper. Initial radar images show supercells as they move through the area.
Gregory, Dakota
On May 8, an F5 tornado ripped through Gregory, South Dakota, and became the only tornado to be judged in the history of South Dakota. On the ground about 30 miles, the tornado reaches a mile wide and destroys 7 farms, 3 of which are washed away. Fortunately, it does not result in death.
Aftermath
The outbreak in Minnesota on May 6 was chosen by the Minnesota Climatology Office for "The fifth most important Minnesota Weather Event of the 20th Century" with 1965 Mississippi & Minnesota River Flood. Considering this epidemic occurred only three weeks after the Palm Sunday tornado outbreak, a quick and successful warning from the U.S. Weather Bureau. and transmission from WCCO Radio made the death toll relatively low. This is also the first time in the history of the state of Minnesota where civil defense sirens are used for bad weather.
See also
- The Minnesota climate
- List of North American tornadoes and tornado outbreaks
References
Bibliography
- Grazulis, Thomas P. (1993). Significant Tornado 1680-1991: Chronology and Event Analysis . Film Environment. ISBN: 1-879362-03-1.
- - (2003). Tornado: Natural Hurricane . University of Oklahoma Press. ISBN 978-0-8061-3538-0.
Note
External links
- May 6, 1965 Tornado outbreak (NWS Twin Cities, MN)
- Radiotapes.com Aircheck recordings from WCCO Radio's tornado coverage from May 6, 1965.
- 8mm Home Video 6 May 1965 Fridley, MN Tornado Damage Video YouTube.
Source of the article : Wikipedia
0 Comments