Thunderstorm watches issued for Ottawa-Gatineau region

Environment Canada has again issued severe thunderstorm watches for parts of eastern Ontario and western Quebec for Wednesday afternoon and evening, with the possibility of hail, strong winds and — in some regions — a tornado.

As of 3 p.m., the watches cover Ottawa-Gatineau and many surrounding communities including Kingston, Cornwall, Perth, Brockville, Pembroke and Maniwaki.

In Ottawa, conditions are favourable for 90 km/h wind gusts and toonie-sized hail, Environment Canada said. There is currently no mention of a potential tornado for the nation’s capital.

Tornados are mentioned primarily in the Bancroft and Pembroke areas, as well as communities to the north in Quebec.

The Quebec alerts also note the potential for “torrential downpours” with up to 40 millimetres of rain in some places.

A map with several sections marked in yellow and red.
This image shows, as of 3 p.m., the extent of thunderstorm watches (in yellow) and warnings (in red) across eastern and southern Ontario. (Environment Canada)

Ottawa’s main airport recorded 17.4 millimetres of rain in a few hours during Tuesday’s storm, the greatest single-day volume in six weeks.

Wednesday’s forecasted high temperature in Ottawa is 30 C, with humidity making it feel as hot as 37. The capital hasn’t reached 30 C since early October.

Daily heat records are possible Wednesday in communities including Brockville, Cornwall, Kingston and Belleville.

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