Morning Briefing: Four things to know about Friday

Friday, June 27, 2014, 7:28 AM - Big rains are taking aim at the west, more showers in parts of the east coast, and another day of heat and humidity looms for Ontario.

Here's your morning coast-to-coast weather roundup.

Atlantic Canada

After a rainy Thursday night in the Maritimes, it's Newfoundland's turn for showers on Friday, with the heaviest amounts on the Avalon and Burin peninsulas.

The island previously saw drizzle on Thursday from an unrelated system.

The system that is targeting the region today previously washed the Maritime provinces, falling heaviest along the Fundy Coast and Nova Scotia South Shore.

Now the rain's moved out of the Maritimes, warmer temperatures are in store for Friday.

Ontario

After the torrential rains that brought flooding to Toronto's Don Valley Parkway and other areas on Wednesday, Thursday was a drier one for southern Ontario.

The exception was in parts of the southwest, particularly west of Hamilton, where rain bands and the occasional thunderstorm could be found.

WHY DOES THE DON VALLEY PARKWAY FLOOD? Read our expert analysis from Scott Sutherland.

Friday should be mostly sunny across southern Ontario, with rising heat and humidity, but there is a chance of isolated showers in the Greater Toronto Area, along with Windsor and other parts of the southwest.

Northwestern Ontario, meanwhile, is in line for thunderstorms, possibly severe, overnight Friday into Saturday, part of a larger system that will also impact the eastern Prairies.

Prairies

The western provinces are the big hot spot for severe weather on Friday. 

Storms on Friday could be severe in southern Manitoba, with heavy downpours possible into Saturday.

But it is in western Manitoba and southern Saskatchewan where Environment Canada has issued rainfall warnings, which include the city of Regina, thanks to storms that the Environment Canada says could drench the region with as much as 50 to 80 mm of rain in some areas.

That should begin overnight Friday into Saturday evening, while storms in general will be widespread across the southern Prairies, with possible severe storms in Manitoba and northwestern Ontario.

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British Columbia

Thunderstorms are also possible in the B.C. interior, and on the South Coast, Vancouver experienced an overnight storm.

The coast is in for plenty of rain on Friday, with the same in store for Saturday.

FEATURE VIDEO: Woman shocked by lightning in a car.