Weather alerts end for Ottawa-Gatineau

Areas north of Gatineau still under tornado watches

Image | barrhaven tornado damage july 13 2023

Caption: People stand outside homes in Ottawa's Barrhaven area after a strong storm with a tornado blew through on July 13, 2023. (Celeste Decaire/CBC)

All weather alerts for Ottawa-Gatineau have ended after a series of tornado and severe thunderstorm warnings and watches were issued Thursday.
All across eastern Ontario and western Quebec, warnings were issued then downgraded throughout much of the afternoon.
Environment Canada confirmed a tornado occurred in Barrhaven at about 1 p.m., during a tornado warning.
The Prescott and Russell, Cornwall, Maxville, Morrisburg and Winchester areas remain under a tornado watch, along with communities north of Gatineau.
A severe thunderstorm warning was reissued for Ottawa-Gatineau at 2:58 p.m. ET, along with Richmond, Metcalfe, Kanata and Orléans, which has now ended.
Tornado watches in Smiths Falls and Perth have ended.
Tornado warnings mean a tornado has been reported or there's solid evidence a tornado is imminent.
Under a warning, advice includes(external link) going indoors to a strong building on its lowest floor possible away from outside walls.

Image | ottawa cornwall kingston tornado watch july 13

Caption: Environment Canada's weather alert page as of around 1 p.m. Thursday. Warnings are red, watches are yellow and special weather statements in grey. (Environment Canada)

Tornado watches covered an area from Renfrew, Ont., to the Quebec border, and from Maniwaki, Que., through Ottawa-Gatineau to Kingston, Ont., earlier Thursday.
A tornado watch was briefly updated to a tornado warning for eastern Lanark County. That ended around 11:30 a.m.
Tornado watches(external link) mean forecasters see weather conditions that could produce a tornado.
It's a similar dynamic for severe thunderstorms(external link): watches are when they may develop, warnings are for when there's evidence one is happening.