ONTARIO
AWCN10 CWTO
Weather summary
for Ontario and the National Capital Region
issued by Environment Canada
at 1:11 p.m. EDT Sunday 18 July 2021.
Discussion.
Damage survey results from Tuesday, July 13th, 2021 and Thursday,
July 15th, 2021
Two tornadoes and one downburst confirmed in Ontario from Tuesday,
July 13th, 2021.
Severe thunderstorms affected portions of central and eastern
Ontario on Tuesday, July 13th. A damage survey team from Western
University's Northern Tornadoes Project has determined that two
tornadoes and one downburst occurred.
Below is a brief summary of each event. Results are considered
preliminary as the investigation is still ongoing.
Event: Penetanguishene, Ontario
Time: 2:55 PM EDT.
Final Classification: Tornado
Preliminary Rating: EF0 with estimated maximum wind speeds of 125
km/h.
Description: A tornado that developed southwest of Penetanguishene
caused mostly tree damage. Preliminary track details are 2.5 km
length and max path width 300 m.
Event: Tasso Lake, Ontario
Time: 4:05 PM EDT
Preliminary Classification: Downburst
Preliminary Rating: EF0 with estimated maximum wind speeds of 130
km/h.
Description: The downburst caused mostly tree damage over an area
1.5 km by 3 km.
Event: Beachburg, Ontario
Time: 6:50 PM EDT
Final Classification: Tornado
Preliminary Rating: EF1 with estimated maximum wind speeds of 170
km/h.
Description: A tornado that developed northeast of Beachburg caused
mostly tree damage. Preliminary track details are 5.8 km length and
max path width 850 m. Tornado motion was from the SW (approx 200
degrees) with the tornado crossing the Ottawa River into Quebec.
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Five EF2 tornadoes confirmed in Ontario from Thursday, July 15th,
2021.
Severe thunderstorms and tornadoes affected portions of central and
eastern Ontario on Thursday, July 15th. A damage survey team from
Western University's Northern Tornadoes Project has determined that
five tornadoes occurred. All five tornadoes have been assigned a
preliminary rating of EF2.
Below is a brief summary of each tornado. Results are considered
preliminary as the investigation is still ongoing.
Event: Barrie, Ontario
Time: 2:30 PM EDT.
Preliminary Rating: EF2 with estimated maximum wind speeds of 210
km/h.
Description: Tornado caused structural, tree and vehicle damage in
Barrie eastward towards Innisfil. Ten people injured. 71 homes
deemed uninhabitable. Preliminary tornado track details are 12
kilometres in length and maximum path width of 600 metres.
Event: Zephyr - Little Britain, Ontario
Time: 3:20 PM EDT.
Preliminary Rating: EF2 with estimated maximum wind speeds of 195
km/h.
Description: Tornado developed north of Zephyr and caused structural
and tree damage while tracking eastward toward Little Britain. One
person injured. One home had a roof removed. Preliminary track
details are 30 kilometres in length and maximum path width of 300
metres.
Event: Lorneville, Ontario
Time: 3:25 PM EDT.
Preliminary Rating: EF2 with estimated maximum wind speeds of 180
km/h.
Description: Tornado that developed west of Lorneville caused
structural and tree damage while tracking eastward toward Hartley.
Preliminary track details are 13 kilometres in length and maximum
path width of 600 metres.
Event: Dwight, Ontario
Time: 4:15 PM EDT.
Preliminary Rating: EF2 with estimated maximum wind speeds of 190
km/h.
Description: Tree damage was reported in the Dwight area. Satellite
imagery review of the storm track revealed a tornado damage path
starting near North Portage. Preliminary track details are 4.76
kilometres and maximum path width of 360 metres.
Event: Lake Traverse, Ontario
Time: 5:10 PM EDT.
Preliminary Rating: EF2 with estimated maximum wind speeds of 190
km/h.
Description: Tree damage was reported in the Lake Traverse area.
Satellite imagery review of the storm track revealed a tornado
damage path starting southwest of the lake. Preliminary track
details are 11.9 kilometres in length and maximum path width of 340
metres.
Please note that this summary may contain preliminary or unofficial
information and does not constitute a complete or final report.
End/OSPC