Storm’s ‘downburst’ winds reached 160 km/h in Britannia
Ottawa Citizen

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By Tom Spears, Ottawa Citizen, September 28, 2017

The storm that hit Ottawa on Wednesday produced a wind gust of 160 km/h at the Britannia Yacht Club, near the heart of the damage zone, Environment Canada says.

As well, it says the Britannia instrument measuring wind speed recorded a one-minute period at the storm’s height with an average wind speed of 140 km/h.

By comparison, an EF1 tornado has winds of 138 to 177 km/h. That scale goes up to EF5, with winds greater than 322 km/h.