‘When thunder roars, go indoors’: Toronto under severe thunderstorm watch
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‘When thunder roars, go indoors!’: Toronto under severe thunderstorm watch
Environment Canada’s severe thunderstorm watch for Toronto said the city could see up to 50 mm of rainfall in some areas. Heavy rain can cause flash flooding and significant reductions to visibility. Strong wind gusts can also damage trees and buildings or overturn vehicles.
Significant rainfall has hit Toronto on Sunday and Environment Canada has placed the city under a severe thunderstorm watch.
Conditions are ripe for dangerous thunderstorms capable of producing strong winds, large hail the size of a nickel and torrential rain throughout the afternoon, the weather agency said in its warning.
Its possible that the heavy downpour could lead to 50 mm of rainfall in some areas.
“When thunder roars, go indoors! Lightning kills and injures Canadians every year. Don’t drive through flooded roadways,” Environment Canada said. “Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.”
The weather agency further warned that heavy rain can cause flash flooding and significant reductions to visibility. Strong wind gusts can also damage trees and buildings or overturn vehicles.
Toronto and Region Conservation Authority currently has flood status for rivers, streams and Lake Ontario’s shoreline at normal water levels.
Severe thunderstorm watch issued for Montreal, much of southern Quebec
Severe thunderstorm watch issued for Montreal, much of southern Quebec. Thunderstorms could produce very strong wind gusts, large hail and heavy rain. People should stay out of bodies of water, Environment Canada says.
A severe thunderstorm watch was issued for much of southern Quebec July 3, 2025. Environment Canada
A severe thunderstorm watch was issued by Environment Canada for the Montreal area Thursday morning.
The “dangerous thunderstorms” could produce very strong wind gusts, large hail and heavy rain that could damage trees or buildings, the federal meteorological agency says, and people should stay out of bodies of water.
Similar alerts were issued for much of southern Quebec.
The Rawdon-Joliette and Mascouche regions are under severe thunderstorm warnings, which is more serious and immediate than a watch.
Nautical activities may be hazardous due to sudden, severe wind gusts on bodies of water.
Stormy skies are expected to persist into the evening. Environment Canada repeated its storm mantra: When thunder roars, go indoors.
The sun will come out tomorrow.
This story was originally published July 3, 2025 at 10:36 AM.
Severe thunderstorm watch issued for parts of N.B.
Warning applies to a big chunk of the province, with Environment Canada warning about the potential for strong wind gusts, large hail and heavy rain later on Thursday. Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain. The watch applies to the Acadian Peninsula, Bathurst and Chaleur Region, Campbellton and the eastern half of Restigouche County.
A severe thunderstorm watch has been issued for a big chunk of the province, with Environment Canada warning about the potential for strong wind gusts, large hail and heavy rain later on Thursday.
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The watch applies to the Acadian Peninsula, Bathurst and Chaleur Region, Campbellton and the eastern half of Restigouche County, Edmundston and Madawaska County, Fredericton and southern York County, Grand Falls and Victoria County, Miramichi and area, Mount Carleton-Renous Highway, Stanley-Doaktown-Blackville, the western half of Restigouche County, and Woodstock and Carleton County.
“Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain,” the watch reads.
“When thunder roars, go indoors! Lightning kills and injures Canadians every year.
“Heavy rain can cause flash flooding and significant reductions to visibility. Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain.”
Southwestern Quebec under severe thunderstorm watch, Montreal closes many municipal facilities
Environment and Climate Change Canada has issued several severe thunderstorm watches for southwestern Quebec. The city has closed many of its facilities and advises people to verify whether their activities have been cancelled before heading to a municipal building.
As a result, the city has closed many of its facilities and advises people to verify whether their activities have been cancelled or not before heading to a municipal building.
The City of Montreal’s website has many tips for residents, including not using camping heaters in case there’s a power outage, which might pose a “high risk of carbon monoxide poisoning.”
The federal agency recommends that people go indoors when “thunder roars.”
Eric Tomlinson, a meteorologist with ECCC, told Radio-Canada that tornado-risk zones are located east of the Richelieu River, in the Eastern Townships.
“Today’s atmospheric dynamics and stability mean that thunderstorms could potentially produce a tornado,” he said.
Montreal under severe thunderstorm watch, facing more wet weather this long weekend
Montreal put under a severe thunderstorm watch for Victoria Day long weekend. Environment and Climate Change Canada said conditions will be favourable for the development of severe thunderstorms. Storms could produce strong wind gusts, large hail and heavy rain. Despite the rain, it is set to be warm with a high of 28°C — feeling more like 33°C.
Environment and Climate Change Canada (ECCC) is forecasting a stretch of wet weather ahead, but Friday began mainly sunny.
The city saw an increase of cloudiness near noon, then a few showers beginning late this afternoon — with Montreal put under a severe thunderstorm watch.
“Conditions will be favourable for the development of severe thunderstorms capable of producing strong wind gusts, large hail and heavy rain this afternoon,” said the weather agency.
When thunder roars, go indoors!
ECCC explained that strong wind gusts can damage trees, buildings and overturn vehicles.
“When thunder roars, go indoors,” they added. “Lightning kills and injures Canadians every year.”
Heavy rain can cause flash flooding and significant reductions to visibility.
Large hail, ECCC said “can cause significant damage and injury.”
Despite the rain, it is set to be warm with a high of 28°C — feeling more like 33°C with the humidex.
Come Saturday, mainly cloudy with showers or thunderstorms beginning near noon.
About 15 to 25mm of rain is expected to fall — the daytime high, 23°C.
The wet weather is then expected to continue into Sunday with a high of 17°C.
On Monday, as many will be enjoying the extra day off, a 30 per cent chance of showers is forecasted — with a high of 12°C.