1985 Barrie tornado
Added photo of the tornado (Non-free)
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{{Short description|1985 F4 tornado in Ontario, Canada}} |
{{Short description|1985 F4 tornado in Ontario, Canada}} |
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{{Infobox weather event |
{{Infobox weather event |
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| name = 1985 Barrie tornado |
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| image = 1985 Barrie tornado.jpeg |
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| alt = A rain-wrapped tornado |
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| alt = Black-and-white aerial photograph outlining state boundaries and highlighting thunderstorm anvils |
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| caption = The rain-wrapped tornado as seen outside of Barrie. |
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| formed = May 31, 1985, 5:00 p.m. [[Eastern Daylight Time|EDT]] ([[UTC−05:00]]) |
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}}{{Infobox weather event/Tornado |
}}{{Infobox weather event/Tornado |
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| fujitascale = F4 |
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}}{{Infobox weather event/Effects |
}}{{Infobox weather event/Effects |
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| casualties = ≥ 8 fatalities, ≥ 155 injuries |
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${{Formatprice|{{Inflation|CA|150,000,000|1985|r=-4}}}} ({{inflation/year|CA}} CAD) |
| damages = $150 million (1985 [[Canadian dollar|CAD]]){{refn|group=nb|name=Losses|All losses are in 1985 CAD unless otherwise noted.}} ${{Formatprice|{{Inflation|CA|150,000,000|1985|r=-4}}}} ({{inflation/year|CA}} CAD) |
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}}{{Infobox weather event/Footer |
}}{{Infobox weather event/Footer |
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| season = [[1985 United States–Canada tornado outbreak]] and the [[Tornadoes of 1985|tornadoes and tornado outbreaks of 1985]] |
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}} |
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On Friday, May 31, 1985, a short-lived, but devastating and violent F4 [[tornado]] affected the City of [[Barrie]], [[Ontario]], [[Canada]]. The tornado was part of a [[1985 United States–Canada tornado outbreak|larger outbreak]] that spanned both the preceding and the following day. The outbreak spawned several long-lived, cyclic, tornado-producing [[supercell]]s over portions of [[Eastern Canada]] and the [[Great Lakes region]] of the [[Midwestern United States|Midwestern]] and [[Northeastern United States]], one of which eventually generated the tornado. |
On Friday, May 31, 1985, a short-lived, but devastating and violent F4 [[tornado]] affected the City of [[Barrie]], [[Ontario]], [[Canada]]. The tornado was part of a [[1985 United States–Canada tornado outbreak|larger outbreak]] that spanned both the preceding and the following day. The outbreak spawned several long-lived, cyclic, tornado-producing [[supercell]]s over portions of [[Eastern Canada]] and the [[Great Lakes region]] of the [[Midwestern United States|Midwestern]] and [[Northeastern United States]], one of which eventually generated the tornado. |
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==Storm development and track== |
==Storm development and track== |
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Over Ontario two very severe thunderstorms had developed (that probably owe their inception, at least partially, to [[Sea breeze#Effects|lake-breeze]]-related [[Convergence zone|convergence]]): one to the east of [[Clinton, Ontario|Clinton]] and another further to the north, in the [[Walkerton, Ontario|Walkerton]] area. These would grow into a pair of devastating, cyclic storms within the next hour—likely the most prolific tornado producers in Canadian history to date.{{cite web |editor=J. R. Janzen |title=Excerpt from the Report on the 1985 Barrie Tornado |url=https://www.msc-smc.ec.gc.ca/msb/awps/bartorep_e.cfm |website=The Green Lane |publisher=Environment Canada |access-date=20 May 2021 |archive-url=https://web.archive.org/web/20020817171744/https://www.msc-smc.ec.gc.ca/msb/awps/bartorep_e.cfm |archive-date=17 August 2002 |date=16 August 2001}} The Barrie tornado formed from the northernmost of this pair of supercells, was the final member of a long-lived [[tornado family]], and may have consisted of three separate, short-tracked tornadoes.{{sfn|Etkin|Brun|Chrom|Dogra|2002|p=3}} It formed in southern [[Simcoe County, Ontario|Simcoe County]] ([[Essa, Ontario|Essa Township]]), less than {{convert|10|km}} southwest of [[Ontario Highway 400|Highway 400]] and the [[Barrie, Ontario|Barrie]] city limits. The situation was compounded by the presence of copious amounts of moisture, which would not only allow any storms that could form to become severe rather quickly, but also lead to the [[Supercell#High Precipitation (HP)|high-precipitation]] (HP) counterpart of the supercell thunderstorm, obscuring any tornado that could manage to develop.{{sfn|Verkaik|Verkaik|1997|p={{page needed|date=May 2021}}}} |
Over Ontario two very severe thunderstorms had developed (that probably owe their inception, at least partially, to [[Sea breeze#Effects|lake-breeze]]-related [[Convergence zone|convergence]]): one to the east of [[Clinton, Ontario|Clinton]] and another further to the north, in the [[Walkerton, Ontario|Walkerton]] area. These would grow into a pair of devastating, cyclic storms within the next hour—likely the most prolific tornado producers in Canadian history to date.{{cite web |editor=J. R. Janzen |title=Excerpt from the Report on the 1985 Barrie Tornado |url=https://www.msc-smc.ec.gc.ca/msb/awps/bartorep_e.cfm |website=The Green Lane |publisher=Environment Canada |access-date=20 May 2021 |archive-url=https://web.archive.org/web/20020817171744/https://www.msc-smc.ec.gc.ca/msb/awps/bartorep_e.cfm |archive-date=17 August 2002 |date=16 August 2001}} The Barrie tornado formed from the northernmost of this pair of supercells, was the final member of a long-lived [[tornado family]], and may have consisted of three separate, short-tracked tornadoes.{{sfn|Etkin|Brun|Chrom|Dogra|2002|p=3}} It formed in southern [[Simcoe County, Ontario|Simcoe County]] ([[Essa, Ontario|Essa Township]]), less than {{convert|10|km}} southwest of [[Ontario Highway 400|Highway 400]] and the [[Barrie, Ontario|Barrie]] city limits. The situation was compounded by the presence of copious amounts of moisture, which would not only allow any storms that could form to become severe rather quickly, but also lead to the [[Supercell#High Precipitation (HP)|high-precipitation]] (HP) counterpart of the supercell thunderstorm, obscuring any tornado that could manage to develop.{{sfn|Verkaik|Verkaik|1997|p={{page needed|date=May 2021}}}} |
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