Environment Canada says three tornadoes touched down in the Ottawa-area on Friday, snapping power lines like twigs and lifting roofs off homes.
The national weather agency previously said only two tornadoes touched down.
It says the newly discovered tornado was the weakest of the three, and actually happened before the others.
It says the EF-1 category twister touched down at about 4:15 p.m. in Calabogie, approximately 100 kilometres west of Ottawa.
WATCH: Injured Gatineau man describes moments tornado hit
Its winds reached 175 km/h, damaging roofs and uprooting trees.
The other two tornadoes happened less than an hour later, with winds reaching 265 km/h and 220 km/h respectively.
The strongest of the tornadoes — a category EF-3 — formed in Kinburn, and over the course of 40 minutes travelled through Dunrobin and hopped the Ottawa River to Gatineau.
WATCH: Coverage of the Ottawa-Gatineau tornadoes
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Nepean residents start to clean-up post-tornado -
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Rain in forecast as Ottawa area recovers from twin tornadoes -
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Officials say half of Ottawa-area homes damaged by tornado can be saved, half need to be rebuilt -
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Ottawa police say no looting seen in wake of tornadoes -
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Hundreds begin the long road to restoration after two tornadoes struck Ottawa and Gatineau -
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The Ottawa tornado’s path of destruction -
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Doug Ford promises to spare no expense to help victims of Ottawa tornadoes -
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Justin Trudeau offers assistance after Ottawa tornado: ‘We are with you’ -
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51 homes ‘decimated’ or in need of structural upgrades after Ottawa tornado: mayor -
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‘Please stay home’: Traffic disruptions expected after Ottawa tornado -
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Power restored to 100K customers after Ottawa tornado -
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‘Anything you need’: Doug Ford pledges support in wake of Ottawa tornado -
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Doug Ford says tornado impact in Ottawa is ‘heartbreaking’ -
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Doug Ford meets with people impacted by Ottawa tornadoes, Red Cross volunteers
Cleanup efforts are continuing.
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