Morning Briefing: Four things you need to know about last night (and today!)
Tuesday, August 5, 2014, 7:34 AM - Strong storms intruded on what was a holiday Monday for many Canadians.
Massive flash flooding occurred in parts of Ontario, with powerful thunderstorms also impacting the Prairie provinces.
And to the east, Tropical Storm Bertha's potential impact on Atlantic Canada is becoming clearer.
Here's a coast-to-coast roundup on what happened last night, and what you should expect today.
Though Bertha reached Category 1 hurricane strength on Monday morning, it has dropped back down to tropical storm status, though still packing a punch with winds of more than 100 km/h.
"Models are starting to show that it should stay off shore and not severely impact anyone," Weather Network meteorologist Kelly Sonnenburg said early Tuesday morning.
All the same, though Bertha certainly will not be Arthur Part II, its strong winds will have some impact on the region, and the Canadian Hurricane Centre has maintained a tropical cyclone advisory in effect for Nova Scotia and Newfoundland.
"The Avalon Peninsula will be the primary threat, with storm surge, strong winds and rain," Sonnenburg says.
The Atlantic region's weather will be unsettled throughout this week, thanks to Bertha and another system tracking not far behind it.
The Maritimes have some risk of scattered thunderstorms and showers today, along with parts of Newfoundland.
Wednesday also carries some risk, though mostly centred on Nova Scotia and southern New Brunswick.
TUNE IN: Watch the Weather Network on TV for updates on these storms. If it's safe to do so, upload your pictures and videos here.
Massive flash flooding swept parts of the Greater Toronto Area, thanks to storms that drenched the region with torrential rain.
Training storms - the meteorological term for a succession of cells tracking one after another over the same area - situated themselves over Burlington and Oakville, with radar estimates of 150 to 200-plus millimetres of rain for localized areas. Roadways were closed and basements were flooded.
The province saw some kind of thunderstorm event in various areas from Friday afternoon and through the long weekend, and it seems there's more risk this week.
"Showers should push into the GTA later this morning, and then by the afternoon we could see the risk of a few scattered thunderstorms through southern Ontario," Sonnenburg says."
There's more risk on Wednesday, though mostly in cottage country up to the Nickel Belt.
Temperatures are a little cooler this morning, the humidity will still make it feel close to 30.
Northwestern Ontario also has a slight risk of seeing some isolated thunderstorms by the afternoon and evening.
HOW DID THE FLOODING HAPPEN SO FAST? Watch below for a full explanation on how flash flooding happens.
All three Prairie provinces saw severe thunderstorm watches or warnings as storms fired up Monday afternoon and evening.
On Tuesday, an upper level low will bring the risk of even more storms, with some of them isolated severe, through the central and southern parts of Alberta and Saskatchewan.
Sonnenburg says hail and heavy downpours will be the primary threats from these storms.
Wednesday could be more of the same, thanks to a low that is expected to develop and track to the northern parts of the Prairies.
"This will also affect the Northwest Territories' fires with the rain, but if thunderstorms do form, lightning will be a threat," Sonnenburg says.
Wildfire risk is high to extreme all across B.C., making the struggle even harder for firefighters in the province.
Tens of thousands of hectares of land continue to burn, with the largest blaze scorching a staggering 75,000 hectares.
Weatherwise, the central Interior of B.C. could see some isolated thunderstorms this afternoon, while the southern coast remains dry and warm.
"Expect the interior to be the hot spot again today," Sonnenburg says.